考试系统

General Safety Back

Single-choice question

Question 1

The causes of electrical line fire are as follows:

A:Short circuit

B:Electric spark

C:Overload of load

D:All of the above

Correct answer： D

Question 2

In case that power lines fall on the ground, personnel should be prohibited from entering within the specified range of the landing spot.

A:10

B:20

C:30

D:50

Correct answer： B

Question 3

The following measures should be taken to prevent electric shock during the operation of electric connection of lighting facilities:

A:Wet hand operation

B:Cut off the power supply

C:Stand on a metal stool or ladder

D:Put on the gloves

Correct answer： B

Question 4

For general residential and office premises, if the main purpose is to prevent electric shock, which leakage protection switch should be selected?

A:6 mA

B:15mA

C:30mA

D:50mA

Correct answer： C

Question 5

What is the dangerous voltage for an electric shock? Above ？

A:24

B:26

C:65

D:110

Correct answer： C

Question 6

In case of an electrical fire, the first measures to be taken are:

A:Call the police

B:Cut off the power

C:Put out the fire

D:Call for help

Correct answer： B

Question 7

Electric kettles are forbidden in laboratories and dormitories. The power of general electric kettle is:

A:About 100W

B:About 200W

C:About 500W

D:Above 800W

Correct answer： D

Question 8

The causes of electric shock accidents are:

A:Current flowing through the body

B:Voltage

C:Electric field

D:Magnetic field

Correct answer： A

Question 9

Maximum electrostatic voltage is up to ? At which, it is easy to generate electrostatic spark and cause fire.

A:50 v

B:Tens of thousands of volts

C:220 v

D:380 v

Correct answer： B

Question 10

Metal ladders are unsafe which of the the following workplaces?

A:Live work workplace

B:A pit or enclosed space

C:Work high above the ground

D:Static electricity

Correct answer： A

Question 11

When the electrical socket is damaged, it is neither beautiful nor convenient to work, and causes:

A:Moisture absorbing and leakage

B:Air switch trip

C:Electric shock damage

D:All of the above

Correct answer： D

Question 12

Which is the domestic lighting circuit voltage?

A:Dc voltage 220 v

B:Ac voltage 280 v

C:Ac voltage 220 v

D:Ac voltage 110 v

Correct answer： C

Question 13

Human body can get different degree of harm under the action of electromagnetic field caused by

A:Current

B:Voltage

C:Electromagnetic radiation

D:Static electricity

Correct answer： C

Question 14

What are the characteristics of lightning discharge?

A:.High current, high voltage

B:Low current, high voltage

C:High current, low voltage

D:Electromagnetic radiation

Correct answer： A

Question 15

The height of the socket in the workshop from the ground is generally not less than ?

A:0．3 m

B:0．2 m

C:0．1 m

D:0．5 m

Correct answer： A

Question 16

In which of the following cases does the leakage protector not work?

A:One hand touches a charged body

B:The human body touches electrical equipment

C:The hands touch the two-phase wire (when the body is under load and has been electrocuted)

D:The human body touches the leakage case

Correct answer： C

Question 17

Which of the following is correct in conducting animal experiments?

A:Waste animal carcasses and organs can be reused as feed materials

B:Waste animal carcasses and organs can be incinerated

C:Waste from laboratory animals can be reused as fertilizer

D:Experimental animals should be obtained from qualified units designated by the state

Correct answer： D

Question 18

What certificates are required for the facilities or departments used to keep experimental animals or conduct animal experiments?

A:Laboratory animal production license

B:Permit for use of laboratory animals

C:Laboratory animal environmental facility certificate

D:Animal experiment permit

Correct answer： B

Question 19

What should be done with the carcasses and wastes of infected animals before they are removed from the special laboratory?

A:Liquid medicine soak

B:High pressure

C:Buried deep

D:Burning

Correct answer： B

Question 20

Once the problem of biosafety of experimental animals appears, which institution must report to the school first?

A:Security department

B:School hospital

C:Principal office

D:Laboratory animal emergency response team

Correct answer： D

Question 21

When a zoonotic disease occurs, it should be reported to the relevant organization of the school immediately. At the same time, what local functional department should be reported to immediately?

A:Health department

B:Department of agriculture

C:Health and epidemic prevention department

D:Hospital

Correct answer： C

Question 22

Various laboratory management regulations should be kept in:

A:A wall or place of easy access

B:Keep in file cabinet

C:Centralized storage by relevant personnel

D:Saved in the computer

Correct answer： A

Question 23

When using office automation equipment, the following provisions should be observed:

A:Information involving state secrets should not be transmitted or processed on fax machines or computers without security measures

B:The use of computer information networks to transmit information on international networks may not involve state secrets

C:No information on state secrets may be reproduced without the approval of the state organs or units that originally classified as the secrets. Mobile phones and wireless microphones are not allowed to convey information involving state secrets

D:All of the above

Correct answer： D

Question 24

The school's working principles for the disposal of hazardous chemical waste are:

A:Discretion

B:Classified collection, fixed point storage, specially-assigned management, centralized processing

C:Treated as household garbage

D:None of the above

Correct answer： B

Question 25

Due to the fault of the actor caused, a fire causing serious consequences and endangering public safety, would constitute:

A:Crime of arson

B:Fire crime

C:Crime of dereliction of duty

D:Crime of negligently causing a serious accident

Correct answer： B

Question 26

Containers and packages of hazardous waste as well as facilities and sites for collecting, storing, transporting, and treating hazardous waste must:

A:Set up hazardous waste identification mark

B:Set up garbage identification mark

C:No identification is required

Correct answer： A

Question 27

What kind of management is used in laboratory safety management?

A:School, (school) department, laboratory three-level management

B:School, (school) department two-level management

C:School (department), the laboratory two-level management

D:Self-management of laboratory

Correct answer： A

Question 28

Which is wrong for buying highly toxic drugs:

A:Apply to the school security office and approve for the record

B:Approved by the public security bureau

C:Approved by the environmental protection agency

D:Purchase through normal channels from designated hazardous chemicals stores

Correct answer： C

Question 29

Shoes to wear in the chemistry lab are:

A:Sandals

B:High heels

C:Slippers

D:Sneakers

Correct answer： D

Question 30

Units that produce, market, store, transport, use hazardous chemicals, or dispose of abandoned hazardous chemicals must ensure that the safety management of their hazardous chemicals conforms to the provisions of relevant laws, regulations, rules and national standards, and be responsible for the safety of their hazardous chemicals.

A:Main person in charge

B:Technicians

C:Practitioners

D:Safety management personnel

Correct answer： A

Question 31

In flammable or explosive places, do not wear:

A:Cloth shoes

B:Rubber shoes

C:Spiked shoes

Correct answer： C

Question 32

Containers and packages of hazardous waste as well as facilities and sites for collecting, storing, transporting, and treating hazardous waste must:

A:Set up hazardous waste identification mark

B:Set up garbage identification mark

C:No identification is required

Correct answer： A

Question 33

Chemical storage room should have anti-theft facilities, maintain ventilation, reagent should:

A:Store in different categories

B:Large quantities of hazardous chemicals are stored in laboratories

C:Can be stored in the hallway

Correct answer： A

Question 34

Disposable gloves and articles contaminated with EB carcinogens in biological experiments should:

A:Be discarded in the ordinary garbage box

B:Unified collection and processing

C:In the lab at random

Correct answer： B

Question 35

In the laboratory,

A:Use a knife switch, wooden switchboard and flex

B:Connect and pull wires at will

C:Fixed power sockets should not be disassembled or changed without permission

Correct answer： C

Question 36

Laboratory keys should not be used by others. Who is responsible for the distribution and management of keys?

A:Laboratory director

B:Tutor

C:Student

Correct answer： A

Question 37

In the laboratory area, you can:

A:Smoke, cook, eat

B:Sleep overnight and engage in recreational activities

C:Do something related to study or work

Correct answer： C

Question 38

During holidays, teachers and students who still need to work in the laboratory should strictly abide by the operating procedures of the laboratory. Someone must be present when the experiment is done and be responsible for locking the doors and windows when the experiment is finished in case of fire or explosion

A:Turn off equipment

B:Turn off water, power and air

C:Turn off the computer

Correct answer： B

Question 39

For commonly used and easy to produce poison reagent, should:

A:Put on the reagent rack

B:Put it in a drawer and have it managed by someone

C:Locked in the reagent cabinet in the laboratory and managed by special personnel

Correct answer： C

Question 40

When conducting dangerous experiments, it should be:

A:One man operation

B:There must be more than two people

C:There have to be three

Correct answer： B

Question 41

Experimental dissection of used pollution-free animal carcasses should:

A:Discard carelessly

B:Put them in plastic bags and dispose of them directly as household waste

C:Put it in a plastic bag and give it to the school animal center

Correct answer： C

Question 42

For laboratory dissection of contaminated animal carcasses,

A:Put them in plastic bags and dispose of them directly as household waste

B:Put them in a plastic bag and throw it away

C:After sterilization in the laboratory, they are put into plastic bags and then handed over to the school animal center for unified treatment

Correct answer： C

Question 43

Waste harmful solid drugs should:

A:Discarded in the garbage without detoxification

B:Discarded in the household garbage after detoxification

C:Collected by the professional company

Correct answer： C

Question 44

If the laboratory, office and other electric places need to add electrical equipment, which is correct?

A:self modification by Teacher

B:The installation should be approved by the relevant department of the school and an electrician should be appointed by the school

C:Students can change without permission

Correct answer： B

Question 45

How should napkin, beverage bottles and other garbage be disposed of?

A:Thrown on the table

B:Thrown on the ground

C:Hand over to the teacher

D:Thrown into trash can

Correct answer： D

Question 46

Which is incorrect for the following safety management of radioactive waste:

A:Allow non-radioactive waste to mix with radioactive waste

B:The radioactive waste will be collected, packaged, and stored in special containers, which will be uniformly recycled by professional departments

C:Radioactive waste is strictly prohibited from being put into non-radioactive waste

D:Radioactive and non-radioactive waste must be separated

Correct answer： A

Question 47

What does CO smell like?

A:Sour

B:Rotten apples

C:No smell

D:Rotten eggs

Correct answer： C

Question 48

What won't explode?

A:Linen dust

B:Sand dust

C:Flour

Correct answer： B

Question 49

Chemicals with the following properties are classified as hazardous chemicals:

A:Explosion

B:Flammable, corrosive, and radioactive

C:Poison

D:All of the above

Correct answer： D

Question 50

What type of refrigerator should not be used to store chemicals in the laboratory?

A:Mechanical temperature controlled refrigerator

B:Electronic temperature controlled refrigerator

C:Explosion-proof refrigerator

Correct answer： A

Question 51

Flammable liquid can be heated by:

A:Heated by an electric stove and watched

B:Heated with an electric heating cover and not watched

C:Heated in a water bath and watched

D:Heated in a water bath and not watched

Correct answer： C

Question 52

After the accident of dangerous chemicals, which direction should we evacuate?

A:Downwind

B:The upper hand

C:Following wind

Correct answer： B

Question 53

Conducting operational experiments or studies on hazardous substances, volatile organic solvents, specific chemicals or toxic chemicals, etc It is wrong to say that:

A:Protective masks must be worn

B:Protective gloves must be worn

C:Protective glasses must be worn

D:It do not matter

Correct answer： D

Question 54

To avoid accidental ingestion of toxic chemicals, which of the following statement is true:

A:Bring food and tableware into the laboratory

B:Chewing gum is allowed in the laboratory

C:Wash hands before eating after using chemicals

D:Smoking is allowed in the laboratory

Correct answer： C

Question 55

What does the path of drug poisoning have?

A:Respiratory inhalation

B:Penetrate through the skin

C:Swallow

D:All of the above

Correct answer： D

Question 56

Which of the following dust is likely to explode:

A:Quick lime

B:flour

C:cement

D:Titanium dioxide

Correct answer： B

Question 57

If organic matter or drugs that react violently with water catch fire, the following will be used, so as not to cause more damage:

A:Other organic matter for firefighting

B:Water extinguishing

C:A fire extinguisher or using sand to put it out

Correct answer： C

Question 58

Waste liquid that can react with each other to produce toxic gas should:

A:Be thrown away with litter

B:Poured down the drain

C:Do not pour into the same collection bucket

Correct answer： C

Question 59

If it is dangerous to pour a waste liquid into the recovery bucket. You should:
Correct answer： C

Question 60

Inflammable and explosive articles and other items should be piled up in:

A:Near the oven, box-type resistance furnace, etc.

B:Near a refrigerator, freezer, etc.

C:A separate ventilated laboratory

Correct answer： C

Question 61

Heating and distillation experiments with flammable reagents, do not use

A:water bath kettle

B:Open flame

C:fuming cupboard

Correct answer： B

Question 62

The treatment of concentrated acid and alkali in the laboratory can generally be:

A:Neutralized before dumping and flush the pipe with plenty of water

B:It should flow down the drain without treatment

C:No need to neutralize. Dump directly into the sewer

Correct answer： A

Question 63

Mercury vapor in the laboratory can cause chronic poisoning of people. In order to reduce the evaporation of mercury liquid level, what liquid can be covered on the surface of mercury liquid?

A:Water liquid

B:glycerin

C:5%Na2S?H2O

Correct answer： B

Question 64

When cleaning chips in milling, use:

A:hand

B:brush

C:staple

D:blow

Correct answer： B

Question 65

Which of the following is not a symptom of death?

A:Do not respond

B:Stop breathing

C:Cardiac arrest

D:Bilateral pupils dilated and fixed

Correct answer： A

Question 66

The following is in line with the "four first, four later" principle of first aid and protection:

A:First aid before save

B:Minor injuries before serious injuries

C:Slow before urgent

D:Treat sickness before injury

Correct answer： A

Question 67

Which of the following is not a sign of respiratory or cardiac arrest?

A:Sudden loss of consciousness

B:Carotid artery pulsation is not palpable.

C:Turn pale to cyanosis

D:contracted pupil

Correct answer： D

Question 68

Which of the following hemostatic methods is not preferred?

A:Direct compression hemostasis

B:Hemostatic point compression hemostasis

C:Tamping hemostasis

D:Tourniquet to stop bleeding

Correct answer： D

Question 69

If the victim is seriously injured and has stopped breathing, or suffers from cardiac arrest, first try to apply extramural cardiac compression and which rescue method?

A:Massage

B:Attack a vital point

C:Artificial respiration

D:Send to the hospital

Correct answer： C

Question 70

The key to saving someone from an electric shock is:

A:The way one gets an electric shock

B:Is it possible to disconnect from power and perform emergency treatment as soon as possible

C:The voltage of the shock

D:Body resistance

Correct answer： B

Question 71

When someone is electrocuted, the wrong way to take the person out of power is:

A:Remove the electrocuter from power by means of a tool

B:Grab the hand of someone who gets electrocuted

C:Grab the coat of the electrocuted

D:Cut off the power

Correct answer： B

Question 72

What is the correct way to detect a gas leak?

A:Switch an electrical switch or make a phone call

B:Use an open flame

C:Quickly close the valve and open the door and window

Correct answer： C

Question 73

Which of the following first aid methods is wrong when there is a foreign body piercing the head or chest?

A:Rush the victim a hospital

B:Fix the foreign body with towel and other objects to prevent it from moving

C:Pull out immediately and stop bleeding

Correct answer： C

Question 74

After the occurrence of chemical strong corrosive scalding and burning accidents, use the following to keep the wound surface clean for medical treatment. Or use a special solvent or solution suitable for the elimination of such chemicals to wash the scalding or burning surface carefully.

A:Rinse skin quickly with plenty of water

B:Quickly free the injured from contaminated clothes and wash the skin with plenty of water

C:Quickly free the injured from contaminated clothes

Correct answer： B

Question 75

When teachers and students enter the biochemical laboratory work, they must be clear about the location, in case of emergency. They can do the corresponding self-help work.

A:The location of the doors and windows

B:The location of inflammable and explosive articles

C:Position of eyewash, emergency spray, and first aid kit

Correct answer： C

Question 76

Which of the following is wrong in the experiment?

A:Once concentrated sulfuric acid falls on the body, wash it with 4.5% acetic acid or 1.5% hydrochloric acid

B:Once concentrated sulfuric acid falls on the body, wash it with a weak base (2 percent sodium carbonate) or soapy liquid to neutralize it

C:Once the lye falls on the skin, wash it neutralized with 4.5% acetic acid or about 1.5% hydrochloric ac

Correct answer： A

Question 77

In the experiment, the strong acid that has been swallowed in the mouth has been splashed. First, drink a lot of water and then take:

A:Aluminum hydroxide solution, egg white

B:Acetic acid juice, egg white

C:Copper sulfate solution (30g dissolved in a cup of water) induced vomiting

Correct answer： A

Question 78

In the experiment, the strong alkali that has been swallowed in the mouth has been splashed. First drink a lot of water and then take:

A:Aluminum hydroxide solution, egg white

B:Acetic acid juice, egg white

C:Copper sulfate solution (31g dissolved in a cup of water) induced vomiting

Correct answer： B

Question 79

In case of irritation or neurotoxicity, take milk or egg white to ease the symptoms before taking:

A:Aluminum hydroxide solution, egg white

B:Copper sulfate solution (30g dissolved in a cup of water) induced vomiting

C:Acetic acid juice, egg white

Correct answer： B

Question 80

Which of the following is incorrect when laboratory personnel is electrocuted?

A:Should quickly cut off the power supply, unbutton the coat of the electrocuted , take out the foreign object from the mouth , and then conduct artificial respiration

B:Stimulants should be administered promptly

C:When the patient is seriously injured, he should be sent to the hospital immediately

Correct answer： B

Question 81

The key points of laboratory safety inspection are:

A:The use and storage of inflammable, infectious, radioactive and toxic substances

B:Decontamination and waste disposal

C:Establishment and implementation of rules and regulations

D:All of the above

Correct answer： D

Question 82

What should I do if I find that my device is not working properly when I am using it?

A:Stop the machine and report to the responsible person

B:Shutdown and leave

C:Continue to use, pay attention to observe

D:Self-maintenance after shutdown

Correct answer： A

Question 83

The following should be noted when using the drying oven and thermostatic oven:

A:Check the power supply before use and have a good grounding wire

B:The container should be kept clean. The net basket should not be rusted, otherwise it will affect the cleanliness of the articles to be dried

C:The heating temperature of plastic and Plexiglas products should not exceed 60℃, the temperature of glass products should not exceed 180℃, and the operating temperature should not exceed the maximum allowable temperature of the drying oven. The power should be cut off in time after use

D:None of the above

Correct answer： D

Question 84

The causes of safety accidents are as follows:

A:Unsafe state of equipment and unsafe behavior of people

B:Poor work environment

C:Defects of labor organization and management

D:All of the above

Correct answer： D

Question 85

When teachers and students enter the laboratory to work, they must make clear the location of the following and close the corresponding main switch in case of abnormal conditions.

A:Fluorescent switch, sink, fume hood

B:Power main switch, water main switch

C:Ventilation switch, multimedia switch, computer switch

Correct answer： B

Question 86

In the design process of experimental content, what items should be selected as far as possible to do the experiment?

A:Pollution-free, non-toxic or low toxicity

B:items with more experimental liquid and residue

C:The experiment waste liquid, residue and other non-recyclable items

Correct answer： A

Question 87

Laboratory biosafety protection includes:

A:Safety equipment, personal protective devices, and measures

B:Strict management system and standardized operating procedures and programs

C:Special design and construction requirements of the laboratory

D:All of the above

Correct answer： D

Question 88

Which of the following is wrong when using a centrifuge?

A:The centrifuge must be covered tightly

B:There is no need to consider the diagonal balance of the centrifugal tube

C:The liquid must not exceed 2/3 of the centrifuge tube

D:Clean the centrifuge cavity after each use

Correct answer： B

Question 89

For humans, which of the following is not a source of biological threat:

A:A variety of pathogenic microorganisms, genetically modified organisms

B:Alien invasion

C:Air pollution from factory chimneys

D:Biological terrorism

Correct answer： C

Question 90

Laboratory biosafety levels are divided into four levels, which level of biosafety protection requirements are the highest?

A:Level 1 (BSL-1)

B:Level 2 (BSL-2)

C:Level 3 (BSL-3)

D:Level 4 (BSL-4)

Correct answer： D

Question 91

Disinfectants commonly used in laboratories for skin or common laboratory equipment include:

A:75% ethanol

B:Formalin (formaldehyde)

C:Lysol (cresol)

D:Bleach (sodium hypochlorite)

Correct answer： A

Question 92

According to the regulation of ministry of health, the pathogenic microorganism that person spreads can be divided into four kinds according to harmful degree. Which kind of harmful degree is the highest among them?

A:Category 1

B:Category 2

C:Category 3

D:Category 4

Correct answer： A

Question 93

According to the regulations of the ministry of agriculture, pathogenic microorganisms of animals can be classified into four categories according to the degree of harm. What kind of damage is the highest degree?

A:Category 1

B:Category 2

C:Category 3

D:Category 4

Correct answer： A

Question 94

The biological safety of experimental animals, refers to which kind of experiments involving animals?

A:Chemical experiment

B:Isotope experiment

C:Drug experiments

D:Pathogenic microorganism experiment

Correct answer： D

Question 95

What is the serious zoonoses in experimental animals?

A:Rabbit disease

B:Canine distemper

C:Haemorrhagic disease

D:Monkey B virus disease

Correct answer： C

Question 96

What kind of laboratory must be used for animal experiments involving biosecurity?

A:Purification laboratory

B:General laboratory

C:Biosafety experiments above BSL-1

D:Positive pressure laboratory

Correct answer： C

Question 97

Who was the first state leader to propose that students in school should have an hour of physical exercise on average every day?

A:Mao Zedong

B:Zhou Enlai

C:Zhu De

D:Liu Shaoqi

Correct answer： A

Question 98

How long should the interval between the end of the evening exercise and sleep be, otherwise, it will affect the rest of the night?

A:30 minutes

B:1 hour

C:1.5 hours

D:2 hours

Correct answer： B

Question 99

Medical studies have shown that the highest incidence of cardiovascular morbidity and myocardial strain occur at ? Therefore, in order to avoid this "dangerous" time period, sports medicine worker thinks, cardiovascular patient appropriate exercise time should be in the afternoon

A:4-6 am

B:6-12am

C:3-6pm

D:5-7pm

Correct answer： A

Question 100

In order to prevent muscle spasms, for long periods of exercise in summer, pay attention to supplements and keep warm during winter exercises.

A:Salt

B:Water

C:calcium

D:sugar

Correct answer： A

Question 101

Generally, without special circumstances, everyone morning pulse is relatively stable. If your pulse do not change the next morning after exercise, it indicates good physical condition or an appropriate amount of exercise. If after exercise, the morning pulse of the next day is times/min more than before, indicating that the previous day activity is a lot, how much should the amount of exercise be adjusted?

A:2 times

B:5 times

C:8 times

D:12 times

Correct answer： B

Question 102

What is the appropriate time for exercise each time, 30 minutes to ?

A:1 hour

B:2 hours

C:3 hours

D:4 hours

Correct answer： A

Question 103

Abdominal pain during exercise that is most likely to occur during middle-distance running mainly due to inadequate preparation, start exercising too hard or running too fast, your internal organs are not yet in a competitive state, and causing dysfunction and abdominal pain

A:Viscera

B:Breathing

C:Blood circulation

D:Mental stress

Correct answer： A

Question 104

General preparation activities are mainly some systemic physical exercises, mainly including, kicking, bending, and so on. What another example?

A:Walk slowly

B:Push-ups

C:Jogging

D:Game

Correct answer： C

Question 105

Do more vigorous physical exercise such as ball games, fast running, aerobics, etc. After the exercise, you should supplement with some alkaline food, such as:

A:Vegetables and fruits

B:Animal protein

C:vitamin

D:Sugar

Correct answer： A

Question 106

In physical exercise or immediately after physical exercise, immediately measure the heart rate and pulse of 10 seconds, with respect to general sports exercisers. The heart rate immediately after exercise had better not exceed times /10 seconds?

A:20 times

B:25 times

C:30 times

D:35 times

Correct answer： B

Question 107

Use a dry powder fire extinguisher for:

A:Electrical fire

B:Flammable gas fire

C:Organic solvent fire

D:All of the above

Correct answer： D

Question 108

The characteristics of explosives at the time of explosion include:

A:The reaction time is extremely fast, usually in less than one millionth of a second

B:Release a lot of heat

C:Produce a lot of gas

D:All of the above

Correct answer： D

Question 109

If trapped in a fire, how can you escape?

A:Jump off a building

B:Wave an item from a window or balcony for help, and use a bed sheet or rope to get down to the next level

C:Hide under your bed and wait for help

D:Open the door and rush out

Correct answer： B

Question 110

In the initial stage of fire, which method should be used to evacuate?

A:Take the elevator

B:Cover your nose and mouth with a wet towel and evacuate from the safe passage

C:Escape by jumping off a building

D:Run to the roof and call for help

Correct answer： B

Question 111

In case of fire, it is advisable to fold 8 layers of wet towel, and the smoke concentration elimination rate can reach:

A:0.4

B:0.6

C:0.8

D:0.95

Correct answer： B

Question 112

The path of fire spread is as follows:

A:Heat conduction

B:Heat convection

C:Thermal radiation

D:All of the above

Correct answer： D

Question 113

What method should be used in fighting flammable liquid fires?

A:Use the fire extinguisher

B:Splash with water

C:Beat

D:Any of the above

Correct answer： A

Question 114

Which of the following fire-extinguishing equipment should not be used for extinguishing electrical fires?

A:Carbon dioxide fire extinguisher

B:. Dry chemical fire extinguisher

C:Foam extinguisher

D:Fire sand

Correct answer： C

Question 115

The best thing to do when you're on fire:

A:Roll or rinse with water

B:Run

C:Cry out for help

D:Take off your clothes as you run

Correct answer： A

Question 116

The evacuation door of the safety exit of the experimental building should:

A:Open freely

B:Open outwards

C:Open inward

D:When closed, open it if necessary

Correct answer： B

Question 117

When using a fire extinguisher to put out a fire, aim the spray at the part of the flame.

A:Upper part

B:Middle part

C:Root part

D:middle-upper part

Correct answer： C

Question 118

Which of the following does not affect the explosive limit of the mixture?

A:The temperature and pressure of the mixture

B:The amount of mixture

C:The oxygen content of the mixture

D:Container size

Correct answer： B

Question 119

Which of the following is an explosion-proof measure:

A:Prevent leakage of chemicals that form explosive mixtures

B:Control combustibles to form explosive mixtures

C:Eliminate fire source and install detection and alarm devices

D:All of the above

Correct answer： D

Question 120

Asphyxiation is to reduce the oxygen concentration to the minimum level to prevent the fire from expanding. Its main tools are:

A:Sand

B:Water

C:Carbon dioxide fire extinguisher

D:Dry chemical fire extinguisher

Correct answer： C

Question 121

Appropriate measures are taken to extinguish the combustion due to the lack or isolation of oxygen. This method is called:

A:Smothering method

B:Fire isolation

C:Cooling fire extinguishing method

Correct answer： A

Question 122

Which of the following is the wrong way to put out a fire?

A:Roll in place

B:Cover the flame with heavy clothing

C:Run against the wind

D:Flush or jump into water with plenty of water

Correct answer： C

Question 123

In the fire escape method, which of the following is incorrect:

A:Cover your mouth and nose with a wet towel

B:Bend over and run quickly to safety

C:Hiding under a bed, waiting for the firemen

D:Run immediately from the nearest fire escape to safety.

Correct answer： C

Question 124

In case of an electrical or circuit failure of laboratory instruments and equipment and fire, you should immediately..., and organize personnel to use fire extinguishers to extinguish the fire.

A:Move valuable equipment quickly

B:Cut off the field power

C:Evacuate people

Correct answer： B

Question 125

In case of fire, immediately:

A:Stop the heat, remove the fuel, turn off the power, and use a fire extinguisher

B:Open the lab door and evacuate as quickly as possible

C:Cover the flame with a dry towel to extinguish the flame

Correct answer： A

Question 126

Which of the following is correct when smoke from the burning building penetrates the laboratory?

A:Crawl along the ground and do not stand to open the door when you have fled to the door

B:Open the laboratory door without closing it behind you

C:You can take the elevator to escape from upstairs to downstairs

Correct answer： A

Question 127

Fire caused by electrical equipment in the laboratory should:

A:Put out with water

B:Put out with carbon dioxide or dry powder fire extinguishers

C:Put out with a foam extinguisher

Correct answer： B
True or False question

Question 1

The door of the dryer (drying oven) can be opened when it is heated.

A:FALSE

B:TRUE

Correct answer： A

Question 2

The capacity of power socket, terminal, and wire should meet the needs of electrical power.

A:FALSE

B:TRUE

Correct answer： B

Question 3

In order to avoid excessive line load and fire, equipment with power over 1000 watts should not share one wiring board.

A:FALSE

B:TRUE

Correct answer： B

Question 4

In case of electric shock, the power supply should be cut off immediately, or a wooden stick with insulating property should be used to cut off and isolate the current. If the victim's clothes are dry and not tightly wrapped around him, one hand can be used to grab his or her clothes and pull him or her away from the live object. But the rescuer must not touch the skin of the person who has been electrocuted or grasp his or her shoes.

A:FALSE

B:TRUE

Correct answer： B

Question 5

An air switch should be used in the laboratory and the necessary leakage protector should be equipped. The electrical equipment should be equipped with enough power and wires, and should not be overloaded with electricity. Electrical equipment and large instruments must be grounded well, and the aging of wires and other hidden dangers should be checked and timely eliminated.

A:FALSE

B:TRUE

Correct answer： B

Question 6

In the use of large instruments, attention should be paid to grounding instruments and equipment, electromagnetic radiation, network, and other safety matters, to avoid accidents.

A:FALSE

B:TRUE

Correct answer： B

Question 7

The electric wire, switch, lamp holder, plug, socket, and other electrical appliances in the laboratory should be checked regularly to see if they are in good condition and there is no leakage of electricity, moisture, mildew, or other conditions. If there is any problem, please report for repair immediately.

A:FALSE

B:TRUE

Correct answer： B

Question 8

Touch switches, wires, and appliances with damp hands.

A:FALSE

B:TRUE

Correct answer： A

Question 9

Do not turn on the power switch and touch electrical appliances when your hands, feet, or body are wet, or when standing on a damp floor.

A:FALSE

B:TRUE

Correct answer： B

Question 10

When a variety of electrical equipment is used simultaneously in the laboratory, the total power consumption and the power consumption of the branching line should be less than the designed capacity.

A:FALSE

B:TRUE

Correct answer： B

Question 11

Do not use electrical equipment with damaged insulation or poor grounding.

A:FALSE

B:TRUE

Correct answer： B

Question 12

When the load is in a working state, it can be plugged, pulled, and connected to the electrical circuit.

A:FALSE

B:TRUE

Correct answer： A

Question 13

When wiring, use the appropriate power cord, power plug, and socket. The power cord connection should be covered with insulating tape.

A:FALSE

B:TRUE

Correct answer： B

Question 14

You can wipe the power switch with a wet cloth.

A:FALSE

B:TRUE

Correct answer： A

Question 15

When performing electrical maintenance, the power must be turned off first. After setting up the billboard, work can be carried out.

A:FALSE

B:TRUE

Correct answer： B

Question 16

It is not necessary to turn off the main power switch of the laboratory every day when you leave, just turn off the power supply of common electrical equipment.

A:FALSE

B:TRUE

Correct answer： A

Question 17

Do not pile up inflammable material and other items near the power outlet.

A:FALSE

B:TRUE

Correct answer： B

Question 18

It is not necessary to cut off the power supply when moving some non-fixed electrical equipment (such as fans and lights).

A:FALSE

B:TRUE

Correct answer： A

Question 19

In the absence of an electricity check, all electrical equipment is considered to have electricity, so don't touch blindly.

A:FALSE

B:TRUE

Correct answer： B

Question 20

Standing nearby may create a step voltage between the feet and grounded object, when a broken line lands or a large current flows into the ground from a grounding device.

A:FALSE

B:TRUE

Correct answer： B

Question 21

When using electrical equipment, a 2-pin plug can be used instead of a 3-pin plug.

A:FALSE

B:TRUE

Correct answer： A

Question 22

Death by electrocution is caused by severe damage to the liver.

A:FALSE

B:TRUE

Correct answer： A

Question 23

Electric and magnetic fields of a certain intensity may be harmful to people.

A:FALSE

B:TRUE

Correct answer： B

Question 24

When a high-voltage power line falls to the ground, the conductor falls within 20 meters, personnel are not allowed to enter. If accidentally in this range, keep your back to the wire drop point, jump with one foot or both feet, evacuate the scene.

A:FALSE

B:TRUE

Correct answer： B

Question 25

After the use of the computer, it is necessary to power off the display, in order to avoid sudden powering on, which produces an instantaneous impact current.

A:FALSE

B:TRUE

Correct answer： B

Question 26

Electrocution accidents are caused by electric current flowing through the human body.

A:FALSE

B:TRUE

Correct answer： B

Question 27

In order to prevent electric shock (shock), the metal shell of the electrical equipment must be grounded, it is best to bury a special ground line with small grounding resistance .

A:FALSE

B:TRUE

Correct answer： B

Question 28

To ensure safe use of electricity, the fuse used in the distribution box should be as thick as possible.

A:FALSE

B:TRUE

Correct answer： A

Question 29

In the lighting circuit, you don't have to a install leakage protector.

A:FALSE

B:TRUE

Correct answer： A

Question 30

In principle, an open fire electric furnace should not be used in chemical laboratories. If it is really necessary to use an open fire electric furnace for experiments, it should be reported to the laboratory and the equipment department, and should only be used after being examined, approved, and put on record.

A:FALSE

B:TRUE

Correct answer： B

Question 31

All colleges and departments should strengthen the management of highly toxic, harmful, and special chemicals, and establish a strict system of receiving, distributing, registering, and approval of supervisors.

A:FALSE

B:TRUE

Correct answer： B

Question 32

In order to facilitate access to the equipment room managed by specially-assigned personnel, keys can be made on your own.

A:FALSE

B:TRUE

Correct answer： A

Question 33

After the end of the experiment, the discarded samples or articles should be cleaned, sorted, or transported away.

A:FALSE

B:TRUE

Correct answer： B

Question 34

The carrier of state secrets refers to various articles such as paper medium, magnetic medium, and optical disc that record state secrets information by means of words, data, symbols, graphics, images, and sounds. A magnetic media carrier includes computer hard disk, floppy disk and tapes, videotapes, and so on.

A:FALSE

B:TRUE

Correct answer： B

Question 35

It is prohibited to send out of the country documents, materials, and other articles classified as state secrets by mail, or to illegally carry them out of the country.

A:FALSE

B:TRUE

Correct answer： B

Question 36

The laboratory should be kept clean and orderly, and no noise, play, or smoking are allowed.

A:FALSE

B:TRUE

Correct answer： B

Question 37

Students should receive safety education and training before entering the laboratory for study and work and pass the examination.

A:FALSE

B:TRUE

Correct answer： B

Question 38

When entering a chemical engineering, biological, or medical laboratory, you may not wear laboratory clothes.

A:FALSE

B:TRUE

Correct answer： A

Question 39

Store food in a laboratory refrigerator or freezer.

A:FALSE

B:TRUE

Correct answer： A

Question 40

After the end of the experiment, the equipment should be shut down, the power should be disconnected, and the related experimental supplies should be arranged.

A:FALSE

B:TRUE

Correct answer： B

Question 41

Personnel engaged in special operations (such as electricians, welders, radiation, pathogenic microorganisms, etc.) must receive relevant professional training, pass the examination, and hold the corresponding qualification certificate to post.

A:FALSE

B:TRUE

Correct answer： B

Question 42

To do experiments in the laboratory on holidays or holidays must be approved by the tutor and reported to the department for the record.

A:FALSE

B:TRUE

Correct answer： B

Question 43

Personal belongings can be stacked in the laboratory.

A:FALSE

B:TRUE

Correct answer： A

Question 44

In the laboratory, electric stove, microwave oven, induction cooker, and electric cooker can be used for heating and cooking.

A:FALSE

B:TRUE

Correct answer： A

Question 45

Smoking and eating are forbidden in the laboratory.

A:FALSE

B:TRUE

Correct answer： B

Question 46

One can eat, drink, and smoke in dust handling area.

A:FALSE

B:TRUE

Correct answer： A

Question 47

If theft or vandalism is found, secure the scene, and report to the security department immediately.

A:FALSE

B:TRUE

Correct answer： B

Question 48

If a non-fire accident occurs in the laboratory, it should immediately report to the person in charge of the unit and the school security department, set up an alert area, and evacuate irrelevant personnel, so as to reduce the potential hazard.

A:FALSE

B:TRUE

Correct answer： B

Question 49

Chemical waste liquid should be collected and stored centrally, not poured into the sewer.

A:FALSE

B:TRUE

Correct answer： B

Question 50

Students entering the laboratory must first understand the safety precautions of the laboratory.

A:FALSE

B:TRUE

Correct answer： B

Question 51

Do not disassemble experimental instruments and equipment without permission.

A:FALSE

B:TRUE

Correct answer： B

Question 52

Before the experiment, the user should understand the instructions and matters needing attention of the experimental instrument. During the experiment, the user should operate in strict accordance with the operating procedures.

A:FALSE

B:TRUE

Correct answer： B

Question 53

A person must be present when the experimental equipment is used, and no one may leave without permission.

A:FALSE

B:TRUE

Correct answer： B

Question 54

Before leaving the laboratory, check whether the doors, windows, and faucets are closed, and whether the ventilation equipment, drinking water facilities, computers, and air conditioners have been turned off.

A:FALSE

B:TRUE

Correct answer： B

Question 55

Do not take flammable or explosive materials out of the laboratory.

A:FALSE

B:TRUE

Correct answer： B

Question 56

Open fire is prohibited in laboratories with inflammable and explosive dangerous goods.

A:FALSE

B:TRUE

Correct answer： B

Question 57

When the passage of the corridor around the laboratory is not affected, the equipment and other items can be piled up.

A:FALSE

B:TRUE

Correct answer： A

Question 58

As long as it doesn't interfere with the experiment, make your bed in a clean area of the lab.

A:FALSE

B:TRUE

Correct answer： A

Question 59

No bicycles, electric bikes, or cars are allowed in the laboratory.

A:FALSE

B:TRUE

Correct answer： B

Question 60

A mechanical temperature controlled refrigerator can store inflammable and explosive chemicals.

A:FALSE

B:TRUE

Correct answer： A

Question 61

Someone must be on duty when using the autoclave, oven, and other autoclave heating equipment.

A:FALSE

B:TRUE

Correct answer： B

Question 62

In order to prevent thefts, you must shut down when you leave the lab temporarily.

A:FALSE

B:TRUE

Correct answer： B

Question 63

Laboratory gas cylinders must be secured with chains, cylinder cabinets, etc., to prevent dumping from causing safety accidents.

A:FALSE

B:TRUE

Correct answer： B

Question 64

Large quantities of gas cylinders can be stored in the laboratory for experimental purposes.

A:FALSE

B:TRUE

Correct answer： A

Question 65

The experimental waste should be classified, stored, and sent to the school waste transfer station in time. Finally, the school should contact a qualified company for processing.

A:FALSE

B:TRUE

Correct answer： B

Question 66

The laboratory should not randomly pull out wires or connect terminal blocks.

A:FALSE

B:TRUE

Correct answer： B

Question 67

The power supply of air conditioner must be pulled out separately, and the terminal board must not be used.

A:FALSE

B:TRUE

Correct answer： B

Question 68

A wooden switchboard, knife, switch, and cord can be used in the laboratory.

A:FALSE

B:TRUE

Correct answer： A

Question 69

The laboratory should hang the corresponding regulations and operating procedures on the wall or accessible place.

A:FALSE

B:TRUE

Correct answer： B

Question 70

A sign with the name and contact information of the person responsible for safety should be put on the door of the laboratory.

A:FALSE

B:TRUE

Correct answer： B

Question 71

Do not place cardboard, chemical reagents, gas cylinders, and other items near the heating equipment, such as refrigerators and ovens.

A:FALSE

B:TRUE

Correct answer： B

Question 72

In case of power failure or water supply cut-off, laboratory personnel must check whether or not the power supply and water source are closed to avoid the occurrence of related safety accidents when the incoming electricity or water comes on again.

A:FALSE

B:TRUE

Correct answer： B

Question 73

Waste radioactive sources must be reported to the laboratory and equipment management office, which should contact qualified units for storage and should not dispose of them without permission.

A:FALSE

B:TRUE

Correct answer： B

Question 74

Laboratory personnel must regularly check the equipment, water and electricity lines, and that doors and windows are in good condition. If problems are found, timely maintenance must be carried out.

A:FALSE

B:TRUE

Correct answer： B

Question 75

In ordinary laboratories, experimental animals may not be raised without permission.

A:FALSE

B:TRUE

Correct answer： B

Question 76

Do not block the escape passage of the laboratory.

A:FALSE

B:TRUE

Correct answer： B

Question 77

The distribution of laboratory keys should be managed by the person in charge of the laboratory. Do not make keys or lend them to others.

A:FALSE

B:TRUE

Correct answer： B

Question 78

The power supply in the laboratory can be disassembled and changed according to the need.

A:FALSE

B:TRUE

Correct answer： A

Question 79

Unless specifically required and certain security measures are taken, air conditioners, computers, and water dispensers should not be turned on overnight.

A:FALSE

B:TRUE

Correct answer： B

Question 80

Do not open doors, read books, or use computers with lab gloves.

A:FALSE

B:TRUE

Correct answer： B

Question 81

After the failure of instruments or equipment, it is necessary to report to the management personnel in a timely manner and register in detail.

A:FALSE

B:TRUE

Correct answer： B

Question 82

Do not mix chemicals in the laboratory refrigerator that may easily produce exothermic reactions.

A:FALSE

B:TRUE

Correct answer： B

Question 83

Flammable, explosive gas, and combustion-supporting gas cylinders (oxygen, etc.) should not be mixed together, and stay away from heat and fire and keep ventilated.

A:FALSE

B:TRUE

Correct answer： B

Question 84

The security management of online information adheres to the principle of "whoever accesses the Internet should be responsible".

A:FALSE

B:TRUE

Correct answer： B

Question 85

No unit or individual may publish, discuss, or disseminate state secret information on electronic bulletin boards, chat rooms, or online news groups.

A:FALSE

B:TRUE

Correct answer： B

Question 86

Outsiders who have nothing to do with the work are not allowed to enter the laboratory.

A:FALSE

B:TRUE

Correct answer： B

Question 87

Keep quiet with each other in the laboratory. No recreational activities are allowed.

A:FALSE

B:TRUE

Correct answer： B

Question 88

The waste gas, liquid waste, solid waste, noise, radioactive and other pollutants generated and discharged in the scientific research, and teaching activities of university laboratories should be declared, registered, collected, transported, and disposed of according to the requirements of the appropriate administrative department of environmental protection personnel. It is strictly forbidden to discharge pollutants such as waste gas, waste liquid, waste residue, and waste chemicals directly to the outside world.

A:FALSE

B:TRUE

Correct answer： B

Question 89

Oven, microwave oven, induction cooker, drinking water heater, sterilizing pot, and other high heat electrical equipment should be placed away from inflammable and explosive items. At the same time, standardize the operation and avoid dry burning of drinking water heater, sterilizer and others.

A:FALSE

B:TRUE

Correct answer： B

Question 90

Establish and improve safety management rules and regulations, improve the responsibility system for safety level by level, and implement the safety work principles of "the one who uses it should be the one who manages it" and "the one who is in charge should be the one who is responsible".

A:FALSE

B:TRUE

Correct answer： B

Question 91

We should strengthen the consciousness of information security and protect the experimental technical parameters, observation data, experimental analysis results, and new scientific discoveries in teaching and research activities.

A:FALSE

B:TRUE

Correct answer： B

Question 92

It is necessary to strengthen the construction and management of the laboratory sewage treatment device (system) to achieve standard discharge. Experimental waste should not be dumped into the tap water sewer or ordinary dustbin.

A:FALSE

B:TRUE

Correct answer： B

Question 93

The laboratory must properly keep fire fighting equipment and anti-theft devices and check them regularly. Fire control equipment must not be used for other purposes. And keep from leaving litter lying around.

A:FALSE

B:TRUE

Correct answer： B

Question 94

Laboratory safety and health inspection mainly includes laboratory layout, sanitation, water and electricity safety, refrigerator and oven use management, dangerous goods use and storage, chemical and biological waste (gas, liquid, solid) disposal, sewage management, gas cylinder safety, radioactive safety, and so on.

A:FALSE

B:TRUE

Correct answer： B

Question 95

Each school organizes related personnel to conduct routine inspection on safety and health management of the laboratory every quarter, record the inspection situation, put forward the existing problems, and make timely rectification. At the end of each inspection, a report should be made to the laboratory.

A:FALSE

B:TRUE

Correct answer： B

Question 96

If the laboratory is found to have a potential safety hazard, it should timely report to the person in charge of the college and the laboratory, the security department, and the laboratory department, and take measures for rectification. In case of concealment or delay in reporting safety risks, the school will seriously deal with those responsible.

A:FALSE

B:TRUE

Correct answer： B

Question 97

Non-toxic and harmless reagents can be treated as toxic and harmful reagents.

A:FALSE

B:TRUE

Correct answer： A

Question 98

High-pressure cylinders may have no fixtures and may be used with expired, uninspected, and unqualified cylinders.

A:FALSE

B:TRUE

Correct answer： A

Question 99

All animal experiments involving bio safety must be carried out in a bio safety laboratory at the appropriate level.

A:FALSE

B:TRUE

Correct answer： B

Question 100

As long as clean and hygienic conditions are established, the general laboratory can keep animals or conduct animal experiments.

A:FALSE

B:TRUE

Correct answer： A

Question 101

Experimental animals are the basic materials and objects for life science research. Its quality is related to research results and success rate. Therefore, experimental animals should come from qualified units.

A:FALSE

B:TRUE

Correct answer： B

Question 102

The carcasses of laboratory animals, whether or not involving pathogenic microorganisms, should be disposed of innocently and frozen before being sent to a qualified facility for disposal.

A:FALSE

B:TRUE

Correct answer： B

Question 103

The Law of the People's Republic of China on the Prevention and Control of Infectious Diseases was amended and adopted at the eleventh session of the standing committee of the tenth National People's Congress of the People's Republic of China on August 28, 2004.

A:FALSE

B:TRUE

Correct answer： B

Question 104

The basic goal of bio safety management is to strengthen the management of experimental animals and prevent zoonoses and infectious diseases.

A:FALSE

B:TRUE

Correct answer： B

Question 105

Discarded sharp objects (including needles, knives, metal, and glass, etc.) should be directly disposed of in a durable container.

A:FALSE

B:TRUE

Correct answer： B

Question 106

Liquid and solid waste do not need to be separated.

A:FALSE

B:TRUE

Correct answer： A

Question 107

Some low-toxicity, non-toxic experimental waste liquid can directly be discharged by sewer without treatment.

A:FALSE

B:TRUE

Correct answer： A

Question 108

One of the main causes of overflow on the laboratory floor is forgetting to turn off the faucet, especially when the water is off, so check carefully when you leave the laboratory.

A:FALSE

B:TRUE

Correct answer： B

Question 109

Shoes with exposed toes can be worn in the laboratory during hot weather in summer.

A:FALSE

B:TRUE

Correct answer： A

Question 110

When leaving the lab, the lab coat must not be worn outside. It must be taken off and left in the lab.

A:FALSE

B:TRUE

Correct answer： B

Question 111

Without the permission of the instructor, no instruments or equipment should be handled or experiments started without permission. During the experiment, please pay attention to safety and operate according to the requirements. If any abnormality is found, please stop immediately.

A:FALSE

B:TRUE

Correct answer： B

Question 112

In an open laboratory, outsiders may operate laboratory equipment at will.

A:FALSE

B:TRUE

Correct answer： A

Question 113

Laboratory safety and health work should adhere to the principle of "safety first, prevention foremost".

A:FALSE

B:TRUE

Correct answer： B

Question 114

Relevant confidential documents, information production, and custody of the establishment of virus protection system can be online.

A:FALSE

B:TRUE

Correct answer： A

Question 115

The terminal blocks in the laboratory are located away from possible water and high temperature environments.

A:FALSE

B:TRUE

Correct answer： B

Question 116

Infrared lamp and ultraviolet lamp cannot be installed in the wooden cabinet or carton for use.

A:FALSE

B:TRUE

Correct answer： B

Question 117

When the electric furnace, oven, and other electrical equipment is in use, the user should not leave.

A:FALSE

B:TRUE

Correct answer： B

Question 118

The management of poisonous articles should strictly abide by the "five points" system (namely "keep by two persons, send and receive by two persons , use by two persons , transport by two persons, locked by two persons "), and accurately measure and record the use of poisonous articles to prevent theft, loss, misappropriation, and misuse. If any problem is found, it should be reported to the security department, the laboratory, the equipment management department, and the local public security department.

A:FALSE

B:TRUE

Correct answer： B

Question 119

Buildings and laboratories that use electronic access control should set corresponding levels for all kinds of personnel, and timely measures should be taken for the loss of access control cards, personnel transfer, or departure from the school, and procedures of reporting loss or handover should be handled.

A:FALSE

B:TRUE

Correct answer： B

Question 120

Radiological personnel must possess a certificate of radiation safety and protection training and carry out experiments with a personal dosimeter.

A:FALSE

B:TRUE

Correct answer： B

Question 121

Warning labels for ionizing radiation (radioactivity) are:

A:FALSE

B:TRUE

Correct answer： B

Question 122

The identification of ionizing radiation is:

A:FALSE

B:TRUE

Correct answer： B

Question 123

Radioactive waste generated by the source units should be timely sent to storage (generally within 3 months) and disposed of according to regulations, and should not be directly discharged into sewers or mixed into ordinary garbage.

A:FALSE

B:TRUE

Correct answer： B

Question 124

Radiation warning signs and work signals may not be placed at the entrance to the radiation workplace.

A:FALSE

B:TRUE

Correct answer： A

Question 125

All laboratory personnel operating or exposed to radionuclides should receive guidance and training in the basics of radioactivity, related techniques, radiology protection, obtain a work permit, and wear personal radiation dosimeter.

A:FALSE

B:TRUE

Correct answer： B

Question 126

Radioisotope laboratories and laboratories using stationary sources should post radiation warning signs at prominent locations, regular inspection of radiation pollution, and practice strict prevention of excessive radiation pollution.

A:FALSE

B:TRUE

Correct answer： B

Question 127

The identification of highly toxic items is:

A:FALSE

B:TRUE

Correct answer： B

Question 128

No sandals, slippers, shorts, or skirts for girls during the casting practice.

A:FALSE

B:TRUE

Correct answer： B

Question 129

Do not play in the workshop, do not climb the crane, wall ladder or other equipment at will, and do not walk or stay on the line of the crane lifting objects.

A:FALSE

B:TRUE

Correct answer： B

Question 130

The laboratory should strengthen the maintenance of instruments and equipment and check and overhaul regularly.

A:FALSE

B:TRUE

Correct answer： B

Question 131

Due to the needs of the experiment, the instrument and equipment can be disassembled at will.

A:FALSE

B:TRUE

Correct answer： A

Question 132

Electrical equipment and large instruments must be grounded well; the aging of wires and other hidden dangers should be checked and timely eliminated.

A:FALSE

B:TRUE

Correct answer： B

Question 133

When carrying heavy things in hand, one should first take a half squatting position, firmly hold the weight, and use the leg muscles to stand up. Do not bend over, in case of injury to back and waist.

A:FALSE

B:TRUE

Correct answer： B

Question 134

The method of artificial respiration is to pinch the nostrils of the injured person, take a deep breath and then put one's mouth to the mouth of the injured person and blow air into the mouth for about 2 seconds. After blowing, open the victim's nostrils, and let him breathe out on his own for about 3 seconds. This is done at a rate of about 12 times per minute.

A:FALSE

B:TRUE

Correct answer： B

Question 135

Extramural heart compression: The rescuer kneels on one side of the electrocuter or on both sides of the waist, with two hands overlapping. The root of the palm is placed above the heart pit and under the sternum of the injured. The root of the palm is pressed vertically downward to squeeze the blood inside the heart. After squeezing, the chest is released quickly, and the blood is filled with the heart at a speed of 60 times per minute.

A:FALSE

B:TRUE

Correct answer： B

Question 136

Cardiac arrest should be immediately performed outside the chest cardiac massage. At the same time, dial 120. In the case of cardiopulmonary resuscitation of patients or severe patients with successful scene rescue, such as coma, convulsion, shock, and deep bluish purple, the patient should be sent to the hospital immediately for treatment.

A:FALSE

B:TRUE

Correct answer： B

Question 137

With strong acid burns, you must first rinse thoroughly with a lot of running water, and then apply alkaline drugs to the skin, Otherwise, it will aggravate the skin damage.

A:FALSE

B:TRUE

Correct answer： B

Question 138

For alkali burns, one must first be washed with a lot of water until the soap-like substances disappear, and then they can be further washed with 1% ~ 2% acetic acid or 3% boric acid solution.

A:FALSE

B:TRUE

Correct answer： B

Question 139

When escorting the patient, remove the foreign object from the mouth and use a supine position with the head slightly lower to keep breathing unimpeded.

A:FALSE

B:TRUE

Correct answer： B

Question 140

After the accident, the injured should be treated with necessary homostasis, dressing, and fixation, and then carried with a stretcher as far as possible. When carrying, the patient should always be placed with the feet forward and head behind, so as to observe the changes of the injured at all times and carry out first aid treatment promptly.

A:FALSE

B:TRUE

Correct answer： B

Question 141

The more tightly the wound is covered in first aid, the better.

A:FALSE

B:TRUE

Correct answer： A

Question 142

When applying first aid wound bandages, the bandages cannot be too tight or too loose, in case of preventing slip or compression of nerves and blood vessels, affecting the distal blood circulation, or even causing limb necrosis.

A:FALSE

B:TRUE

Correct answer： B

Question 143

Someone's left index finger was completely severed from the root of the finger due to a careless mechanical operation. Proper first aid treatment is to first find a vessel to preserve the severed finger, and then to bandage the wound of the stump to stop the bleeding.

A:FALSE

B:TRUE

Correct answer： A

Question 144

First aid sequence: If there is a respiratory cardiac arrest, first resuscite, followed by hemostasis, dressing, and then fracture fixation or dislocation reduction (fixation), and finally transport.

A:FALSE

B:TRUE

Correct answer： B

Question 145

For small burns and scalds caused by fire or hot water, rinse with cold water for more than 30 minutes, then apply with burn cream, and do not cover with toothpaste, soy sauce, salt, etc.

A:FALSE

B:TRUE

Correct answer： B

Question 146

For large area burns or scalds caused by fire or hot water, one must be covered with a wet towel, wet cloth, or wet cotton, and then sent to the hospital for treatment.

A:FALSE

B:TRUE

Correct answer： B

Question 147

In the case of electric shock, do not pull (with a stick to pick up the wounded), one should immediately cut off the power supply, and then first do artificial respiration, then do cardiac compression, and at the same time, dial 120, and finally, send the patient to the hospital for treatment.

A:FALSE

B:TRUE

Correct answer： B

Question 148

After sudden and irresistible lightning, flood, earthquake, house collapse, or other natural disaster, one should follow the command of the leading group, immediately organize evacuation, rescue site staff or conduct self-help in order to ensure the personal safety of personnel and finish the work.

A:FALSE

B:TRUE

Correct answer： B

Question 149

During the experiment, if you receive a general cut, you should immediately remove the foreign object from the wound, keep the wound clean, remove the dirt around the wound with alcohol wool, and apply trauma cream or anti-inflammatory powder.

A:FALSE

B:TRUE

Correct answer： B

Question 150

During the experiment, if a severe cut is encountered, the upper 10 cm of the wound can be tied tightly with gauze to slow down the bleeding, and the patient should be sent to the hospital immediately.

A:FALSE

B:TRUE

Correct answer： B

Question 151

When it comes to common burns and scalds, do not break the blister, apply 95% alcohol to the wound, apply a burn cream or a layer of petroleum jelly, and cover with gauze.

A:FALSE

B:TRUE

Correct answer： B

Question 152

If bromine drips on the skin, rinse immediately with water, using 1 volume 25% ammonia, 1 volume turpentine, and 10 volume (75%) alcohol mixture. Also, bromine may be rinsed with benzene glycerine first and rinse with water next.

A:FALSE

B:TRUE

Correct answer： B

Question 153

If phenol burns the skin, remove the dirt with a cotton dipped in glycerin or a mixture of polyethylene glycol and alcohol (7:3), rinse with water, and then wet apply with a saturated sodium sulfate solution. But do not wash the dirt directly with water. Otherwise, it may aggravate the wound.

A:FALSE

B:TRUE

Correct answer： B

Question 154

For uningested poison spilled into the mouth during the experiment, spit out immediately and rinse your mouth with plenty of water.

A:FALSE

B:TRUE

Correct answer： B

Question 155

For the poison that has been swallowed through spillage, the antidote should be taken according to the nature of the poison and the patient sent to the hospital immediately.

A:FALSE

B:TRUE

Correct answer： B

Question 156

For strong acid that has been swallowed through spillage into the mouth, drink plenty of water first, and then take aluminum hydroxide paste and egg-white.

A:FALSE

B:TRUE

Correct answer： B

Question 157

For the strong base swallowed through spillage into the mouth, drink plenty of water first, and then take acetic acid juice and egg-white.

A:FALSE

B:TRUE

Correct answer： B

Question 158

In the case of acid or base, drink milk, and a don't take nauseants

A:FALSE

B:TRUE

Correct answer： B

Question 159

If it is irritating and neurotoxic, take milk or egg white to ease it, and then take copper sulfate solution (30g dissolved in a cup of water) to induce vomiting. You can also put your finger into your throat to induce vomiting and go to the hospital immediately after.

A:FALSE

B:TRUE

Correct answer： B

Question 160

In the case of respiratory inhalation of toxic gas, steam, smoke, and respiratory system poisoning, one should immediately move the patient to the fresh outdoor air, uncollar, and make him warm and quiet, but do not attempt artificial respiration.

A:FALSE

B:TRUE

Correct answer： B

Question 161

In the case of inhalation of a small amount of chlorine, bromine vapor, or poisoning, one can gargle with sodium bicarbonate solution, but do not attempt artificial respiration.

A:FALSE

B:TRUE

Correct answer： B

Question 162

When electric shock occurs to laboratory personnel, they should quickly cut off the power supply, remove the jacket of the electrocuted person, take out any foreign object in the mouth, and then conduct artificial respiration. When the patient resumes breathing, he should be sent to the hospital immediately.

A:FALSE

B:TRUE

Correct answer： B

Question 163

When someone gets an electric shock, pull him or her away immediately.

A:FALSE

B:TRUE

Correct answer： A

Question 164

If someone is electrocuted, the power should be cut off immediately. Do not directly pull the person who is electrocuted. Separate the person from the live body with a wooden rod or other insulated object.

A:FALSE

B:TRUE

Correct answer： B

Question 165

When lightning occurs, if the operator is isolated in the exposed area, one should immediately put his hands on his knees squatting, while bending over.

A:FALSE

B:TRUE

Correct answer： B

Question 166

At the scene of the shock, if the person that is electrocuted has no breath or pulse, one can judge that the one electrocuted is already dead, one can give up rescue.

A:FALSE

B:TRUE

Correct answer： A

Question 167

In emergency rescue, first move the electrocuted person away from the power, and then immediately perform artificial respiration and heart compression.

A:FALSE

B:TRUE

Correct answer： B

Question 168

When there is no glue stick nearby, you can use your mouth to lick the label to stick.

A:FALSE

B:TRUE

Correct answer： A

Question 169

Hazardous wastes refer to all wastes with potential biological hazards; inflammable, corrosive, toxic, radioactive, and harmful to human environment.

A:FALSE

B:TRUE

Correct answer： B

Question 170

Near-sighted people who wear contact lenses cannot wear protective glasses when conducting experiments that require them.

A:FALSE

B:TRUE

Correct answer： A

Question 171

When cleaning and repairing the instrument, power off and ensure that no one can start the instrument.

A:FALSE

B:TRUE

Correct answer： B

Question 172

Safety accidents should be dealt with in line with the principle of people first and property later, firmly and promptly.

A:FALSE

B:TRUE

Correct answer： B

Question 173

If an accident occurs during the experiment, it should be handled calmly and properly, and the accident should be solved on site as much as it is possible. If it is serious and personal safety may be endangered, evacuate the site in time, and inform the adjacent laboratory staff to evacuate quickly, and call the police as soon as possible.

A:FALSE

B:TRUE

Correct answer： B

Question 174

When doing the experiment, we should take good care of the experimental equipment and pay attention to our own safety to avoid accidents.

A:FALSE

B:TRUE

Correct answer： B

Question 175

Students and new employees should participate in safety education and training before entering the laboratory. Only after passing the training and assessment can they enter the laboratory to study and work. Students should carry out experimental research under the guidance of teachers.

A:FALSE

B:TRUE

Correct answer： B

Question 176

Keep the laboratory environment clean and tidy, and keep the floor, desktop, and equipment clean and tidy to reduce potential safety hazards.

A:FALSE

B:TRUE

Correct answer： B

Question 177

The central task of laboratory safety is to prevent loss of life, property, and research data.

A:FALSE

B:TRUE

Correct answer： B

Question 178

The main causes of safety accidents in university laboratories are: careless operation, negligence, aging facilities, lack of protective facilities, etc.

A:FALSE

B:TRUE

Correct answer： B

Question 179

The main forms of laboratory safety accidents are: fire, explosion, poisoning, burns, infection of pathogenic microorganisms, irradiation, and mechanical and electrical injuries.

A:FALSE

B:TRUE

Correct answer： B

Question 180

Due to special laboratory requirements, gas cylinders used in the cell culture room may not be fixed, as you are careful.

A:FALSE

B:TRUE

Correct answer： A

Question 181

Due to special laboratory requirements, gas cylinders used in the cell culture room can be fixed in the form of trolleys.

A:FALSE

B:TRUE

Correct answer： B

Question 182

Wear protective gloves to answer the phone while the experiment is in progress.

A:FALSE

B:TRUE

Correct answer： A

Question 183

All kinds of cases should be reported immediately, properly protect the scene, and if someone is injured, try to record the scene before the destruction (such as mobile phone photos).

A:FALSE

B:TRUE

Correct answer： B

Question 184

During the experiment, do not use oral aspiration to transfer liquid.

A:FALSE

B:TRUE

Correct answer： B

Question 185

Needle, glass, disposable scalpel, and other sharp tools should be put in the container after use, and sharp object container should be replaced before the content reaches two-thirds.

A:FALSE

B:TRUE

Correct answer： B

Question 186

The used lab clothes should not be placed with the daily clothes or in the clean area after they are taken off.

A:FALSE

B:TRUE

Correct answer： B

Question 187

When using microwave ovens, metal containers can be used and no load is allowed

A:FALSE

B:TRUE

Correct answer： A

Question 188

Timely eliminate aging the instrument and equipment with performance instability and safety hazards (such as refrigerator more than 10 years, oven more than 12 years).

A:FALSE

B:TRUE

Correct answer： B

Question 189

In the morning, lunch, evening, and other times when there are few people, please pay special attention to closing the door behind you to ensure the safety of laboratory property and personal belongings.

A:FALSE

B:TRUE

Correct answer： B

Question 190

Teachers should learn and study the knowledge of laboratory safety, carry out safety knowledge education for students in theoretical teaching and experiments, teach students how to correctly use experimental equipment and experimental operation, and teach students how to protect themselves, and rescue each other and evacuate safely in case of sudden accidents.

A:FALSE

B:TRUE

Correct answer： B

Question 191

In the event of an accident in the laboratory, field personnel should promptly organize and take charge, cut off the source of the accident, and try to prevent the situation from spreading and protect the scene. Evacuate students and others in a timely and orderly manner, give aid to the injured, and protect personal property at the scene.

A:FALSE

B:TRUE

Correct answer： B

Question 192

Equipment and utensils exposed to dangerous chemicals and highly toxic substances and pathogenic microorganisms must be clearly marked. Clean immediately after use, especially before maintenance or moving to other sites.

A:FALSE

B:TRUE

Correct answer： B

Question 193

The drinking water heater, autoclave, and other equipment can be heated without water.

A:FALSE

B:TRUE

Correct answer： A

Question 194

Buildings and laboratories with "no fireworks" warning signs do not need to be equipped with necessary fire protection, showers, eye wash stations, alarms, fire escape facilities, and obvious signs.

A:FALSE

B:TRUE

Correct answer： A

Question 195

Test data should be backed up remotely.

A:FALSE

B:TRUE

Correct answer： B

Question 196

Use U disk to copy data. First conduct anti-virus for U disk , to prevent virus infection.

A:FALSE

B:TRUE

Correct answer： B

Question 197

Creating a safe and hygienic laboratory environment is the sole responsibility of the laboratory staff.

A:FALSE

B:TRUE

Correct answer： A

Question 198

Strengthen computer security management, establish virus protection system, and constantly update. Important data should be regularly backed up.

A:FALSE

B:TRUE

Correct answer： B

Question 199

When using the laser scanner to preview and scan data, the scanner cover can be removed.

A:FALSE

B:TRUE

Correct answer： A

Question 200

Anti-microbials do not kill microorganisms, only inhibit their growth and reproduction.

A:FALSE

B:TRUE

Correct answer： B

Question 201

Research on pathogenic microorganisms must be conducted in biosafety level 1 (bsl-1), level 2 (bsl-2), level 3 (bsl-3) and level 4 (bsl-4) laboratories.

A:FALSE

B:TRUE

Correct answer： B

Question 202

If, in the event of the theft, robbery, loss, or leakage of pathogenic microorganisms, the carrier, the escort, the storage institution, or the establishment unit of the laboratory fails to report in accordance with the Regulations on Biosafety Management of Pathogenic Microorganisms Laboratories of the ministry of health, PRC, thereby causing the spread or spread of infectious diseases or other serious consequences, the principal person in charge, the person in charge who is directly responsible, and other persons who are directly responsible should be removed from office or dismissed according to law by the competent department at the higher level of the establishment unit of the laboratory or the carrier unit or the storage institution. If a crime has been committed, criminal liability should be investigated according to law.

A:FALSE

B:TRUE

Correct answer： B

Question 203

The biohazard label:

A:FALSE

B:TRUE

Correct answer： B

Question 204

Biological laboratory waste (including animal remains, etc.) can be discarded in the ordinary garbage bin.

A:FALSE

B:TRUE

Correct answer： A

Question 205

Disposable gloves and articles contaminated with EB carcinogens from biological experiments can be discarded in ordinary garbage bins.

A:FALSE

B:TRUE

Correct answer： A

Question 206

In order to ensure the normal development of animal experiments, the entry of unrelated personnel, insects, wild animals, and pathogenic microorganisms into the laboratory should be strictly controlled.

A:FALSE

B:TRUE

Correct answer： B

Question 207

Biological waste should be placed in a special, marked container.

A:FALSE

B:TRUE

Correct answer： B

Question 208

For toxic experimental wastes, special personnel should be responsible for the collection of heavy metals, cyanide, ethyl bromide (EB), and their compounds by classification, and special personnel should be responsible for the management, regular recycling, and unified treatment.

A:FALSE

B:TRUE

Correct answer： B

Question 209

For the pain caused by excessive exercise, the body can recover actively through reduction, rest, massage, hot compress, and other methods.

A:FALSE

B:TRUE

Correct answer： B

Question 210

Based on one's actual situation, exercise step by step, do not rush, and do what you can. Exercise time should not be too long, and the exercise load should not be overweight, so as to avoid excessive fatigue or sports injury.

A:FALSE

B:TRUE

Correct answer： B

Question 211

Do not wear commemorative MEDALS, knives, keys, pins, and other sharp or hard objects, and change into sports shoes and sportswear.

A:FALSE

B:TRUE

Correct answer： B

Question 212

When running on natural terrain, pay attention to the cushioning movement, with the sole of the foot first. Back pedal degree, and front swing height should be smaller.

A:FALSE

B:TRUE

Correct answer： A

Question 213

Swimming exercise is not suitable for people with the following conditions: People with heart disease, high blood pressure, tuberculosis,weakness, erious trachoma, infectious skin diseases, bacterial enteritis, illness or fever, headache, cold, fatigue, hunger, 45-60 minutes after meal, and shortly after vigorous exercise, and by female student during menstruation.

A:FALSE

B:TRUE

Correct answer： B

Question 214

There are a variety of safety measures in sports; equipment exercise must be protected. When you fall forward, take advantage of the opportunity to roll forward. Do not use your hands to support the ground. When you fall backwards, let your body fall down naturally. Do not support the ground with your hands.

A:FALSE

B:TRUE

Correct answer： B

Question 215

When you are in danger while doing outdoor activities, you should keep calm, clearly judge your situation, and then choose the appropriate way to call for help like writing "SOS" on flags, kites, beaches, deserts, snow, or other visible places, shouting, whistling, waving clothes, handkerchiefs, flags, mirror reflections, lighting a campfire, and tapping anything that makes a noise.

A:FALSE

B:TRUE

Correct answer： B

Question 216

After the person suffers from cold, one can make the body sweat through intense physical exercise, and seek further treatment.

A:FALSE

B:TRUE

Correct answer： A

Question 217

When using river waters for swimming exercise, you should know the water temperature, whirlpool, water flow, deep water area, shallow water area, and the underwater water situation.

A:FALSE

B:TRUE

Correct answer： B

Question 218

During menstruation, female students can participate in appropriate sports activities, such as jogging, playing table tennis, badminton, volleyball, dancing, and others with a low load.

A:FALSE

B:TRUE

Correct answer： B

Question 219

When you have muscle spasms (cramps), the common relief method is to lengthen the spasmodic muscle, accompanied by local massage and acupuncture point pressure, and other methods to promote relief.

A:FALSE

B:TRUE

Correct answer： B

Question 220

For internal injuries such as contusion, muscle strain, joint sprain, bursitis, tenosynovitis, etc., apply cold compresses, pressure dressings, and elevate the injured limb within 24 hours to minimize bleeding in the injured area.

A:FALSE

B:TRUE

Correct answer： B

Question 221

Elevated blood pressure, lethargy, irritability, and pallor, if due to exercise, are all signs of inactivity.

A:FALSE

B:TRUE

Correct answer： A

Question 222

Don't drink lots of water, cold drinks, or take cold showers immediately after strenuous exercise.

A:FALSE

B:TRUE

Correct answer： B

Question 223

Obesity is caused by eating too much but using too little calories, when the intake of calories exceeds those which the human body has burned. Excessive calorie changes in the body adipose, and accumulated in great quantities, causes adipose tissue to increase abnormally.

A:FALSE

B:TRUE

Correct answer： B

Question 224

The amount of exercise load, the intensity, time, and density, varies from person to person and time to time. It should be arranged according to the actual situation of one's sports load.

A:FALSE

B:TRUE

Correct answer： B

Question 225

During first aid, keep the victim supine, quiet, and not seated or standing. Cold compress the head, and keep the body warm. If there is a coma phenomenon, the rescuers can pinch the philtrum and Neiguan Point. In the event of an obstacle to breathing, artificial respiration may be performed.

A:FALSE

B:TRUE

Correct answer： B

Question 226

For minor muscle strain or a small amount of muscle fiber fracture, immediately apply cold compress, local pressure dressing, and elevate the limb.

A:FALSE

B:TRUE

Correct answer： B

Question 227

After an ankle ligament sprain, immediately apply cold compress, and fix the pressure bandage.

A:FALSE

B:TRUE

Correct answer： B

Question 228

Cold compresses on sore muscles help repair damaged tissue and relieve cramps.

A:FALSE

B:TRUE

Correct answer： A

Question 229

In case of a fire alarm or fire in the laboratory, take immediate measures to put out the fire and report to the security department or call 119.

A:FALSE

B:TRUE

Correct answer： B

Question 230

If a fire is found in the distribution box of the laboratory building, the fire hydrant in the building can be used to put out the fire.

A:FALSE

B:TRUE

Correct answer： A

Question 231

Carbon dioxide extinguishers may cause frostbite if not used properly.

A:FALSE

B:TRUE

Correct answer： B

Question 232

When there is no water nearby, or there is no time to take off clothes when the body is on fire, you should roll on the spot to put out the fire to save yourself.

A:FALSE

B:TRUE

Correct answer： B

Question 233

The fire brigade should have the right to demolish or damage the buildings adjacent to the fire site according to the needs of fire fighting.

A:FALSE

B:TRUE

Correct answer： B

Question 234

When liquid is on fire, use fire extinguisher to put out the fire. Do not use water or other objects.

A:FALSE

B:TRUE

Correct answer： B

Question 235

When a fire breaks out in a building, take an elevator to evacuate quickly and safely.

A:FALSE

B:TRUE

Correct answer： A

Question 236

The guideline of fire control work is: "prevention first, combination of prevention and elimination" and implement a fire control safety responsibility system.

A:FALSE

B:TRUE

Correct answer： B

Question 237

When using a portable fire extinguisher, remove the pin, aim at the root of the fire, and press down on the level to release the extinguishing agent to extinguish the fire.

A:FALSE

B:TRUE

Correct answer： B

Question 238

If you are trapped by smoke, get up and run out of the fire.

A:FALSE

B:TRUE

Correct answer： A

Question 239

The laboratory should be equipped with appropriate fire fighting equipment. Participants should be familiar with their storage location, follow the appropriate steps, and grasp the relevant knowledge of fire fighting.

A:FALSE

B:TRUE

Correct answer： B

Question 240

The laboratory must be equipped with fire fighting equipment that meets the requirements of the room. Fire fighting equipment should be placed in an obvious or accessible place. No one is allowed to use fire equipment for any reason.

A:FALSE

B:TRUE

Correct answer： B

Question 241

Move quickly away from the fire site in the direction of evacuation signs and exits as soon as possible in case of fire.

A:FALSE

B:TRUE

Correct answer： B

Question 242

When the door is closed by fire and there is no way to escape, damp bedding and clothes can be used to block the crack of the door, and pour water on the door to cool down, so as to delay the time for the fire to spread. and call for help.

A:FALSE

B:TRUE

Correct answer： B

Question 243

An explosion is a sudden physical or chemical change in a substance that simultaneously releases a large amount of gas and energy (light energy, heat energy, mechanical energy), accompanied by a loud sound.

A:FALSE

B:TRUE

Correct answer： B

Question 244

Once there is a laboratory fire, do not panic, use fire equipment, and take effective measures to control and extinguish the fire.

A:FALSE

B:TRUE

Correct answer： B

Question 245

After the fire, do not blindly jump off the building. You can use evacuation stairs, balconies, windows, and other methods of escape like a rope, or a cover sheet, or a quilt to tear into a strip to form a rope and fasten on the reliable fixed thing such as a window frame, iron railing. Protect your palm with a towel, cloth, and slip down the rope, or descend to the floor that hasn't caught fire to escape.

A:FALSE

B:TRUE

Correct answer： B

Question 246

When a combustible liquid is flowing in the form of combustion, the spray of an extinguishing agent should be aimed at the root of the flame from near to far and across the fire from side to side, and advance rapidly until the flame is extinguished.

A:FALSE

B:TRUE

Correct answer： B

Question 247

If combustible liquid burns in the container, it should be sprayed into the container from the upper side of the container. However, it should not be directly sprayed on the combustion liquid surface to prevent the momentum of an extinguishing agent from flushing combustible liquid out of the container and enlarging the fire.

A:FALSE

B:TRUE

Correct answer： B

Question 248

In case of a gas fire, don't blindly extinguish the fire. First, cut off the spreading path of the fire, and then evacuate the pressure vessel in the fire or the pressure vessel threatened by the radiant heat of the flame.

A:FALSE

B:TRUE

Correct answer： B

Question 249

When fighting a fire which is toxic, corrosive, or with more toxic combustion products, a protective mask must be worn.

A:FALSE

B:TRUE

Correct answer： B

Question 250

Try to get as close to the ground as possible and cover your mouth and nose with a wet towel after a fire starts.

A:FALSE

B:TRUE

Correct answer： B

Question 251

After the fire, when threatened by the fire, make a prompt decision to put on soaked clothes, bedding, and follow directions to the safety exit.

A:FALSE

B:TRUE

Correct answer： B

Question 252

After the fire occurs, when all escape routes are blocked by the fire, you should immediately return to the interior, use a flashlight, wave clothes, call out for help, and other means to send a distress signal from the window, and wait for rescue.

A:FALSE

B:TRUE

Correct answer： B

Question 253

The fire isolation method is to separate the combustible ignition source or oxygen, which can prevent the fire from further expansion.

A:FALSE

B:TRUE

Correct answer： B

Question 254

The method of cooling fire extinguishing is to cool the combustible material below its ignition point and stop the combustion reaction.

A:FALSE

B:TRUE

Correct answer： B

Question 255

Water is conductive, so it is not suitable for fighting an electrical equipment fire, and it is not suitable for fighting the fire of a water burning substance or insoluble burning liquid.

A:FALSE

B:TRUE

Correct answer： B

Question 256

Fire extinguishers according to its mobile form can be divided into: portable and cart type.

A:FALSE

B:TRUE

Correct answer： B

Question 257

In case of fire of electrical equipment, attention should be paid to: 1. The electrical equipment may be electrified and electric shock may occur; 2. Some electrical equipment is filled with a large amount of oil, which may lead to oil injection or even explosion.

A:FALSE

B:TRUE

Correct answer： B

Question 258

When you are asleep, the correct response to a fire alarm is: 1. Try the door with a hand to see if it is hot. If cold, open the door to escape; 2. Prepare a wet towel; 3. Do not jump off the building at will and try to land safely after making homemade life ropes. 4. Use natural conditions as a lifesaving slide.

A:FALSE

B:TRUE

Correct answer： B

Question 259

During outdoor fire fighting, stand in the upper position.

A:FALSE

B:TRUE

Correct answer： B

Question 260

The four methods are isolation, asphyxiation, cooling, and chemical suppression.

A:FALSE

B:TRUE

Correct answer： B

Question 261

Unit fire safety system mainly includes the following contents: Fire safety education and training, fire tour and inspection; Management of safety evacuation facilities, fire fighting (control room) on duty, maintenance and management of fire fighting facilities and equipment, rectification of fire hazards, safety management of fire and electricity use, fire and explosion prevention of inflammable and explosive dangerous goods and site, the organization and management of full-time and compulsory fire brigades, fire fighting and emergency evacuation plan drill, gas and electrical inspection management (including lightning protection, anti-static), fire control safety work evaluation and reward and punishment, other necessary fire safety contents.

A:FALSE

B:TRUE

Correct answer： B

Question 262

In case of electric power or line fault and fire, the power supply should be cut off immediately, personnel should be evacuated, and the fire should be put out by fire extinguishers.

A:FALSE

B:TRUE

Correct answer： B

Question 263

Fire poses the most serious and direct threat to the laboratory. The control of the three elements of fire (inflammable, combustibles, and ignition source) should be strengthened.

A:FALSE

B:TRUE

Correct answer： B

Question 264

Common fire extinguishing methods in laboratory: water, sand, and fire extinguisher.

A:FALSE

B:TRUE

Correct answer： B

Question 265

Leave the laboratory building as soon as there is fire or smoke. When the smoke has penetrated the laboratory, crawl along the ground. Because the ground layer has more fresh air, it is not easy to be poisoned and asphyxiated, which is conducive to escape. When fleeing to the door, never stand up to open the door to avoid being overwhelmed by heavy smoke.

A:FALSE

B:TRUE

Correct answer： B

Question 266

When the fire occurs in the laboratory and escapes to the outdoor corridor, it is necessary to close the door as soon as possible, so as to prevent the fire from spreading rapidly with people's movement and increase the effective time for escape.

A:FALSE

B:TRUE

Correct answer： B

Question 267

Never use an elevator when there is a fire in the laboratory building, because the elevator may lose power or control, and because of the "chimney effect", the elevator shaft often becomes a passage of smoke.

A:FALSE

B:TRUE

Correct answer： B

Question 268

If there is a fire in the laboratory and you are trapped indoors, you should quickly turn on the faucet, fill all the containers with water, and wet the towel. Cover your mouth with a wet towel to cover part of the smoke.

A:FALSE

B:TRUE

Correct answer： B

Question 269

The method of laboratory fire fighting should be suitable for the cause. For a general small fire, use a wet cloth, asbestos cloth, or sand to cover the fire to put it out.

A:FALSE

B:TRUE

Correct answer： B

Question 270

If the electrical line is on fire, please first cut off the power, then use the dry powder fire extinguisher or carbon dioxide fire extinguisher to extinguish the fire. Do not splash water directly to extinguish the fire, in case of electric shock or electric explosion.

A:FALSE

B:TRUE

Correct answer： B

Question 271

When electrical equipment is on fire, it can be put out with water.

A:FALSE

B:TRUE

Correct answer： A

Question 272

You should open the door as soon as possible to get out of the elevator when trapped.

A:FALSE

B:TRUE

Correct answer： A

Question 273

Combustion must have three major conditions: comburent, combustibles, and ignition sources. Therefore, as far as possible, isolation can be taken to prevent the occurrence of a laboratory fire.

A:FALSE

B:TRUE

Correct answer： B