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A fire of escaping liquefied flammable gas is best extinguished by ______.A.cooling the ga

A fire of escaping liquefied flammable gas is best extinguished by ______.

A.cooling the gas below the ignition point

B.cutting off the supply of oxygen

C.stopping the flow of gas

D.interrupting the chain reaction

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更多“A fire of escaping liquefied f…”相关的问题

第1题

Generally, the first action in extinguishing an LFG fire caused by escaping gas is to ____

__.

A.sweep flames away with water spray

B.shut off the leak

C.use a chemical foam fire extinguisher

D.call the local fire department

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第2题

Escaping a fire is a serious matter. Knowing what to do before a fire breaks out can save

a life. For example, people should know the safety measures to take before opening a hall door during a fire. Also, make sure everyone knows how to unlock doors that may be in the escape path. At times, a key is needed to unlock a door from the inside. So, keep the key in the lock, or, you can put the key on a key ring and put it where it can be found easily.

If you live in an apartment, know the ways you can use to get out. Show everyone in the family these routes. Stress the importance of using stairways or fire escapes, not elevators.

From most homes and the lower floors of apartment buildings, escape through windows is possible. Learn the best way of leaving by a window with the least chance of serious injury.

In a home fire, windows are often the only means of escape. The second floor window sill is usually not more than 13 feet from the ground. An average person, hanging by the fingertips, will have a drop of about six to the ground. Of course, it is after to jump a short way than to stay in a burning building. Rolling away from the building when you land.

Windows are also useful when you are waiting for help. Often you'll be able to stay in the room for several minutes if you keep the door closed and the windows open. Keep your head low in the window to be sure you get fresh air rather than smoke that may have leaked into the room.

On a second or third floor, the best windows for escape are those which open onto a roof or balcony. From the roof or balcony, a person can either drop to the ground or await rescuer. Dropping onto cement or pavement might end in injury. Bushes, soft earth, and grass can help to break a fall. A rope ladder should be considered when the drop is too great.

In a town where the fire department acts quickly, it may be best to wait for rescuer. Close the doors and wait by an open window for help. Shout for help. Be sure to close the door before opening a window. Otherwise, smoke and fire may be drawn into the room by the draft.

From most homes you can escape a fire through the ______.

A．attic

B．garage

C．windows

D．balcony

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第3题

（)Summer Resort is also called "Mountain Hamlet for Escaping the Heat".A.

()Summer Resort is also called "Mountain Hamlet for Escaping the Heat".

A. Beidaihe

B. Chengde

C. Beijing

D. Hangzhou

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第4题

When someone turns away his body, it means impatience and a desire（)a conversation.

A.to escape

B. escaped

C. escaping

D. having escaped

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第5题

The police discovered that the bank robbers had been escaping in a stolen car.（)

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第6题

And they can ______their passports______，making leaving or “escaping” virtually impossible

A. have…remove

B. had…remove

C. have…removing

D. have…removed

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第7题

A. AvoidingB. FendingC. EscapingD. Shielding

A.Avoiding

B. Fending

C. Escaping

D. Shielding

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第8题

They took_____measures to prevent poisonous gases from escaping in the chemical plant

A.fruitful.

B.beneficial.

C.effectiv

D.influential.

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第9题

Frederick Douglass' s_________ is an autobiography, relating the archetypal story of African Americans escaping from their cruel and wicked white masters to emancipation.

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第10题

The UN definition of refugee（).A、is scientific and authoritativeB、is too narrowC、doesn’t

The UN definition of refugee().

A、is scientific and authoritative

B、is too narrow

C、doesn’t count people escaping from their countries for economic and environmental reasons

D、doesn’t count people who have fled violence but have stayed in their own nations.

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