默认题库 - 消防演习与作业

单选题

A safety outlet is provided on the CO₂ discharge piping to prevent（）.

A. over pressurization of the space being flooded
B. rupture of cylinder due to temperature increase
C. over pressurization of the CO2 discharge piping
D. flooding of a space where personnel are present

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单选题

Records of tests and inspections of a cargo vessel’s fire extinguishing systems shall be（）on board until the vessel’s Certificate of Inspection expires.

A. consealed
B. detained
C. contained
D. kept

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单选题

How is the external flotation bladder of an immersion suit inflated?（）

A. It is inflated by a small CO2 bottle that is automatically tripped when the front zipper is at the top of the zipper track
B. It is inflated by a small CO2 bottle that is manually tripped
C. It is inflated by blowing through an inflation tube
D. It inflates by sea water bleeding into the flotation bladder and reacting with a chemical therei

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单选题

How do you operate a portable CO₂ fire extinguisher?（）.

A. Point the horn down
B. Turn cylinder upside-down
C. Break the rupture disc
D. Pull pin，squeeze gri

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单选题

Halon extinguishes a fire by（）.

A. breaking the chain reaction
B. smothering the fire
C. cooling the fire
D. coating the fuel with a nonflammable surface

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单选题

Good housekeeping on a vessel prevents fires by（）.

A. allowing better access in an emergency
B. eliminating potential fuel sources
C. eliminating trip hazards
D. improving personnel qualificatio

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单选题

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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单选题

Gas masks（）.

A. should be worn while fighting a fire
B. can be used in atmospheres deficient in oxygen
C. filter contaminants from air that is to be breathed
D. may be substituted for a self-contained breathing apparatu

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单选题

Foam extinguishes a fire by（）.

A. smothering the burning material
B. chemical combination with burning material
C. absorbing the burning material
D. organic destruction of the burning material

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单选题