1, the width of the fire escape should not be less than 3.5m..

2. What are the causes of fire caused by electrical equipment? (Answer at least four reasons)

(1) short circuit; (2) overload; (3) the contact resistance is heated; (4) Electric spark and arc; (5) The surface of the lighting lamp, electric heating element and electric heating tool is heated; (6) overpressure heating; (7) Eddy current heating.

3. The minimum width of the workshop evacuation staircase should not be less than1.10m.

4, liquefied petroleum gas bottles can not exceed 95% of the container volume.

5. The first modern fire police force in China was established in Tianjin on 1902.

6, according to the "high-rise residential building fire management rules", the residents committee unit is responsible for the daily fire prevention work of high-rise residential buildings.

7, any unit and adult citizens have the obligation to participate in organized fire fighting work.

8. High-rise civil buildings cannot use bottled liquefied petroleum gas.

9 units or individuals punished by the fire department, that should not be or inappropriate, have the right to apply for reconsideration.

10, the use of carbon dioxide fire extinguishers and matters needing attention:

How to use the carbon dioxide fire extinguisher: first unplug the safety pin, hold the nozzle at the root of the fire source with one hand, and swing forward left and right with the other hand. The spraying direction of fire extinguishing agent should form an angle of about 45 with the fire surface. Precautions when using carbon dioxide fire extinguishers: Wear gloves when using, and avoid skin contact with spray pipes and spray hoses to prevent frostbite.

1 1, aluminum trichloride and lead phosphide cannot be put out with water. Because alumina and lead phosphide will hydrolyze when they meet water, they will have an exothermic reaction, which is easy to cause combustion and has the danger of causing fire.

12. The Fire Prevention Law of People's Republic of China (PRC) was promulgated by the State President's Decree and passed by the NPC Standing Committee.

13, how many possibilities are there for household short circuit? (Name at least three)

The main reasons for short circuit are: (1) improper insulation selection, such as high voltage level and low insulation level; (2) Loss of insulation due to high temperature, humidity and corrosion; (3) Tie wires or hang insulation on metal objects; (4) With the passage of time, the insulation layer is worn or mechanically damaged or aged; (5) The oil of oil immersion equipment is aged, deteriorated or contains moisture and impurities; (6) Lightning overvoltage, voltage rise when the line is empty, etc. , it will also make the insulation of weak conductor be broken down and short circuit will occur.

14. There are four kinds of combustion: flash, fire, spontaneous combustion and explosion.

15. There are three kinds of explosions: physical explosion, chemical explosion and nuclear explosion.

16, Fire Protection Law of People's Republic of China (PRC) consists of seven chapters and 74 articles.

17. Halon fire extinguishers can be used to put out fires of alkali metals such as sodium, potassium, aluminum, lithium and their oxides.

18, the fire extinguisher that usually needs to be used upside down is foam extinguisher.

19, fire hazard rectification methods are divided into two ways: on-site rectification and rectification within a time limit.

20, because the thicker the fuse, the smaller the resistance, the easier it is to fuse, so the fuse used in the distribution box should not be too thick. Fuses should be made of low melting point materials, such as lead.

2 1, "ABC dry powder fire extinguisher" means that it can extinguish Class A, Class B and Class C fires.

22. When the oxygen content of the burning substance reaches more than 50%, the flame of the burning substance is almost dim.

23. Dry powder fire extinguishers can be divided into ABC, BC and BCD.

24. According to the Fire Protection Law, "the fire protection work is led by the State Council".

25. Fire exits in public places of entertainment should be opened to the outside.

26, electric spark is the ignition source.

27, the basic methods of fire fighting are cooling method, isolation method, suffocation method, inhibition method.

Twenty-eight, public * * * fire facilities respectively by the competent departments of urban construction, posts and telecommunications in accordance with the requirements of urban planning is responsible for the construction, maintenance and daily management, by the local public security fire control institutions responsible for acceptance and inspection.

29, fire safety key units should be in accordance with the fire fighting and emergency evacuation plan, at least once a quarter, and combined with the actual, and constantly improve the plan.

30. 1885 The world's first modern professional fire brigade was established in the United States.

3 1, carbon dioxide fire extinguishing agent has certain electrical insulation performance and is suitable for extinguishing live equipment below 600 volts.

32. The center temperature of cigarette butts can reach 700 ~ 800℃, which exceeds the ignition point of combustible materials such as cotton, hemp, wool, paper and furniture. If cigarette butts are thrown at will and come into contact with these combustibles, it is easy to cause burning and even fire.

33. The evacuation indicator light is generally set on the wall not exceeding 1 m from the ground.

34. The basic principles of fire control work are: laws must be observed, violators must be prosecuted, and law enforcement must be strict.

35. What are the locations and projects of fire hazards in colleges and universities?

① Experiments and demonstrations in ordinary classrooms require fire, electricity or dangerous chemicals.

(2) The sound-absorbing materials in audio-visual classrooms, studios and computer centers are mostly flammable materials, and lighting devices such as iodine tungsten lamp and spotlights are installed.

(3) There is more fire and electricity in the maintenance room, and flammable liquids are often used.

(4) The light box of the projector in the film projection room has a high temperature. If the card cannot be removed in time, it may cause the film to catch fire. Acetone used for film repair is easy to catch fire when exposed to open flames.

⑤ There is a certain amount of inflammable and explosive dangerous chemicals in the laboratory, which can easily lead to fire if used and kept improperly. In addition, during the experiment, naked flame is often used for experimental operations such as heating and distillation, and excessive electricity consumption when using electric heating instruments. This may be dangerous.

⑥ Students' dormitories, classrooms, clubs, canteens and other places where people are concentrated, the safety evacuation exits are insufficient or even blocked. In the event of a fire, it is easy to cause casualties.

⑦ Dining halls, laboratories, dormitories and other places use a lot of electricity, especially the dining halls use fuel such as gas and liquefied petroleum gas, which are prone to explosion and fire.

Today, due to the lax management of some student dormitories, some students pull wires at will, cook with electric stoves, keep warm with electric heaters and use electric irons. Some students use alcohol stoves and diesel stoves to cook, and some use wax to read books after turning off the lights at night, which causes fires due to improper use or unattended.

36. Why can't you pull the wire?

Pulling wires indiscriminately means pulling wires indiscriminately and adding electrical equipment indiscriminately, which is very dangerous. For example, if the wire is dragged on the ground, it may be crushed or scratched by hard objects and damage the insulator; Pull wires in flammable and explosive places without fire and explosion protection measures; Pulling wires at random often needs to avoid people's eyes and ears, and the working conditions of tools and materials are poor. Wires are often tied with nails or iron wires instead of reliable clamps, resulting in insulator wear and wire damage; And regardless of the thickness of the wire, arbitrarily increase electrical equipment, so that the wire is overloaded and heated. Most of these situations will cause short circuit, spark or fire, and some will also lead to burning, explosion and even electric shock casualties.

In order to ensure the safety of electricity use and prevent wires from being pulled randomly, relevant departments generally have clear regulations:

First, the installation should apply for power-on. After installation, the line equipment should be inspected, and the power can only be turned on after it is qualified. Temporary lines should be strictly controlled, managed by special personnel, and removed after use. The second is to use qualified line equipment and electrical equipment. Third, the lines and equipment should be installed by professional electricians and must comply with relevant safety regulations.

37. Why can't gasoline and oil be packed in plastic barrels?

Answer: Plastic has high resistivity and is easy to accumulate static electricity. Because the plastic bucket is an insulator, static electricity cannot leak. The gasoline in the barrel has high-potential static electricity with the opposite polarity to the barrel. When metal or human body is close to the barrel mouth, static electricity will generate sparks, which will cause gasoline vapor to burn.

38. After a fire broke out in a place, a comrade picked up a foam extinguisher and ran to put out the fire. Can he do it? Why?

Answer: No, because when he was carrying foam extinguisher, the chemicals in the fire extinguisher barrel reacted chemically, producing bubbles of carbon dioxide gas, which was ejected from the nozzle under a certain pressure, thus failing to achieve the purpose of extinguishing the fire.

39, how to do a good job of fire prevention of household liquefied petroleum gas?

(1), unqualified gas cylinders are not allowed to be used, and it is forbidden to disassemble and repair the angle valve or pressure reducing valve, and send it to the maintenance unit for maintenance on a regular basis.

(2), are not allowed to use any fire and electrical appliances to prevent air leakage, it is forbidden to dump residual liquid.

(3), cylinders are not allowed to be close to fire and heat sources, it is forbidden to use fire, steam and hot water to heat cylinders.

(4), are not allowed to leave when using, children, patients, disabled people should not use, it is forbidden to use gas cylinders in the bedroom and bathroom.

(5), the use of liquefied gas should strictly abide by the safety operation procedures, it is forbidden to open the gas source before ignition.

6, liquefied petroleum gas leakage, to timely disposal, do a good job of ventilation.

⑦ Learn and master the knowledge of safe use and fire prevention of liquefied petroleum gas, so as to nip in the bud.

40. Why are there so many fire accidents in winter?

In winter, the weather is cold, the rain is scarce, there are many kinds of raw materials stored, and the gas consumption for fire and electricity is large. Winter is the beginning and end of every year. With busy production, short days and long nights, people tend to slack off and often ignore fire safety, so the first fire can't be found in time. Therefore, there are many fire accidents in winter, with great losses and casualties.

4 1. Seven substances have been found to be explosive. What are they? (Name more than five names)

Answer: (1) metal (such as magnesium powder and aluminum powder); (2) Coal (such as activated carbon and coal); (3) cereals (such as wheat and starch); (4) Feed (such as blood meal and fish meal); (5) Synthetic materials (such as plastics and dyes); (6) Household by-products (such as cotton and tobacco); (7) Forest products (such as coated paper and wood flour).

42. What are the hazards of using "hot" boiling water in the dormitory?

① It is easy to burn out the lines in the building or cause a fire due to forgetting.

(2) It is easy to make the thermos bottle explode and hurt people.

③ It is easy to burn and scald.

43. What are the fire prevention measures for air conditioners?

① Try to keep the curtains away from the air conditioner, or use curtains made of flame retardant fabric. According to the past experience and lessons, curtains are the main media for the fire spread of window air conditioning.

(2) Use electric air conditioner for heating, and remember to cut off the power supply of the electric heating part when shutting down. If cooling is needed, it should be cooled for 2 minutes.

(3) Don't cut off and turn on the air conditioner power continuously for a short time. When cutting off the power supply or unplugging the power supply, be sure to put the selector switch in the "stop" position, and then press the start step again after turning on the power supply.

(4) the power consumption of general household air conditioners is 1-3 kW, and the installation and connection of its power supply circuit must meet the requirement that the rated current is not less than 5- 15 amps, and it is equipped with a separate overload protection device.

44. What are the fire prevention measures for electric cups and kettles?

① Users must cut off the power supply after using the electric cup and kettle.

② Never put the power plug of the electric heating cup on the power socket for a long time, and control it by the switch connected in series with the plug. Because it is easy to have illusions, people often mistake opening for closing and checking for opening.

③ Don't put the electric cup on the wooden table for a long time. The electric kettle must be used on a nonflammable base, and there must be no other combustible substances around it.

④ Be careful when cleaning the electric cup, and don't let water flow into the charged part of the electric cup.

45. Why can't civil liquefied petroleum gas cylinders lie down?

Because when the cylinder is placed vertically, the lower part of the bottle is liquid and the upper part is gas. When the angle valve is opened, the gas is washed out. With the escape of gas, the lower part of the liquid is gradually vaporized, so that the upper part of the bottle always keeps a certain pressure. If the cylinder is placed horizontally, it is mostly liquid near the bottle mouth. When the angle valve is opened, the liquid rushes out and vaporizes quickly, and its volume expands by about 250 times. This amount of gas greatly exceeds the load of the cooker. One possibility is that a very large and high flame rises, causing flammable materials nearby. Another possibility is that the gas is in danger of explosion before it is safely burned.

46, household liquefied petroleum gas cylinder fire how to deal with?

① Turn off the gas switch immediately.

② Never turn on or off any electrical switch.

(3) Gently open all doors and windows, and quickly escape from the outdoor.

(4) alarm processing. You can't use any telephone at home. If you have a fire extinguisher, you can use it to put out the fire. Without a fire extinguisher, if it is a small flame at first, turn off the cylinder switch with a wet towel and cloth protector as soon as possible, and then put out the fire. If the fire is big, take out quilts, cotton wool, coats, etc. Leave the room as soon as possible while giving an alarm, cover the cylinder quickly after being soaked with water, put out the fire, and then turn off the switch immediately.

47. What are the precautions for running away?

① Beds, desks, bathrooms, corridors, staircases, elevators and other places without any fire control facilities in the room cannot be used as shelters. Even if you can't see the flame for a while, the fumigation and hot air of smoke can make people coma and die.

② Don't take the ordinary elevator. The elevator shaft leads directly to all floors of the building, so smoke, heat and fire can easily flood in. Under the action of heat, the elevator will be out of control or deformed; Smoke and fire or the toxicity of smoking will endanger people's lives, so never take the elevator in case of fire.

(3) In the process of escape, fire doors, fire shutters and other fire partitions should be closed in time, and the ventilation and smoke exhaust system should be started, which is very conducive to escape and evacuation and should be paid attention to.

(4) Don't jump off a building until you get there. There are many examples of jumping off a building in a fire because of panic, but most of them are either dead or injured. Because according to statistics, the probability of death from jumping off a building above the third floor is extremely high, and it is best not to jump off a building unless absolutely necessary. However, if threatened by fire, there is no choice but to jump off the building, and corresponding measures should be taken to minimize casualties.

(1) Holding soft objects such as quilts and sofa cushions can slow down the impact when landing.

(2) Try to jump downstairs to the telephone line, asbestos tile carport, grass, pool or tree, which can relatively reduce the degree of casualties.

(3) When jumping with bare hands, hold your head tightly, bend your body and curl up together to avoid your head touching the ground.

48. Tell me about the fire-fighting facilities you often see on campus? (at least five kinds)

(1) Fire hydrant (2) Evacuation indication sign (3) Safety exit

(4) Emergency light (5) Connector (6) Fire extinguisher

(7) The smoke detector (8) and the temperature detector (9) spray.

49, computer fire extinguishing method:

If the computer is on fire, even if the computer is turned off or even unplugged, the components in the computer are still very hot, and flames will still be emitted and toxic gases will be generated, and the fluorescent screen and picture tube may also explode. The countermeasure is: when the computer starts to smoke or catch fire, immediately unplug the main switch, and then cover the computer with a wet carpet or quilt, which can not only prevent the spread of fireworks, but also block the glass fragments on the screen. Don't splash water on the burning computer, even if it is turned off, because the sudden drop in temperature will explode the hot picture tube. In addition, there is still residual current in the computer, and splashing water may get an electric shock. Don't open the lid to watch. When putting out the fire, you can only approach the computer from the side or back to prevent the explosion of the kinescope from hurting people.

50. What material fires can't be put out by water? Why? (Name at least 4 kinds)

Fires that water can't put out are:

(1) Metal fires cannot be put out with water. Because water can decompose with metals (such as potassium and sodium) to produce hydrogen and release a lot of heat, it is easy to cause explosion.

(2) alkali metal carbide and alkali metal hydride can't be put out with water. For example, potassium carbide, sodium carbide, aluminum carbide, calcium carbide, potassium hydride and magnesium chloride react with water, releasing a lot of heat, which may cause fire and explosion.

③ Flammable liquids that are lighter than water and insoluble in water should not be extinguished by water in principle.

(4) Melted steel cannot be extinguished with water. Because the temperature of molten iron and steel is about 1600℃, water vapor can decompose hydrogen and oxygen when it is above 1000℃, which is a danger of explosion.

⑤ Tri-acids (sulfuric acid, nitric acid and hydrochloric acid) can not be extinguished by strong water flow, but by jet water flow when necessary.

⑥ In case of fire of high-voltage electrical equipment, it is generally impossible to extinguish the fire with water without good grounding equipment or cutting off the current.

5 1, fire prevention in student dormitories must do the following:

(1) Do not pull the power cord.

② Don't throw cigarette butts about.

Don't smoke in bed.

Don't light candles, and don't read in mosquito nets.

⑤ Do not burn sundries, and take effective fire prevention measures when lighting mosquito-repellent incense.

⑥ Do not store inflammable and explosive articles.

⑦ Do not use high-power electrical appliances such as quick heating, electric furnaces and air conditioners, and do not use electrical appliances such as electric blankets that may cause fires and inferior electrical appliances.

Don't use alcohol stove or liquefier to make a fire for cooking.

VIP power off. Smell the smell of wire glue, report it in time and take measures.

Attending the desk lamp away from pillows and bedding.

52. When Party B leases Party A's house for commercial operation, Party B shall be responsible for general fire safety.

53. Crimes that endanger public security by setting fire, breaking water, exploding, poisoning or other dangerous methods, which have not caused serious injuries or deaths to others or heavy losses to public or private property, shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years.