A.cooling
B.smothering
C.shielding of radiant heat
D.breaking the chain reaction
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A.breaking the chain reaction
B.smothering the fire
C.cooling the fire
D.coating the fuel with a nonflammable surface
A.base of the equipment
B.top of the equipment
C.power source
D.source of the fire
A.allowing better access in an emergency
B.eliminating potential fuel sources
C.eliminating trip hazards
D.improving personnel qualifications
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
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 apparatus
最新試題
Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.
Fire extinguishing agents used on Class C fires must be（）.
Foam extinguishes a fire by（）.
Good housekeeping on a vessel prevents fires by（）.
Foam is a very effective smothering agent and（）.
Foam-type portable fire extinguishers are most useful in combating fires involving（）.
Fire fighting equipment requirements for a particular vessel may be found on the（）.
Flames from small leaks of LFG may be extinguished by（）.
Foam extinguishes a fire mainly by（）.
Halon extinguishes fire primarily by（）.