A.at the top of the flames
B.at the base of the fire near the edge
C.in short quick bursts
D.toward the upwind side of the fire
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A.Fires in electrical equipment
B.Flammable oils and greases
C.Class A fires in ordinary combustibles
D.Materials containing their own oxygen
A.cooling
B.smothering
C.shielding of radiant heat
D.breaking the chain reaction
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
最新試題
Flames from small leaks of LFG may be extinguished by（）.
Fire extinguishing agents used on Class C fires must be（）.
Except in rare cases，it is impossible to extinguish a shipboard fire by（）.
Firefighting foam is only effective when the foam（）.
Flame screens are used to（）.
Halon fire extinguishers are NOT effective when used on which types of fires?（）
Halon extinguishes a fire by（）.
Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.
Control valves of a CO2 system may be located within the protected space when（）.
Foam is a very effective smothering agent and（）.