A.shutting off the air supply
B.cooling the fuel to below ignition temperature
C.dispersing the fuel
D.removing the source of ignition
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A.utilizing carbon dioxide or dry chemical fire extinguishers
B.utilizing soda and acid fire extinguishers
C.blowing the flames out
D.letting it burn itself out
A.contain flammable fumes
B.protect firefighters from flames
C.prevent flames from entering tanks
D.keep flames and sparks from getting out of an engine's exhaust system
A.the paint locker
B.spaces open to the atmosphere
C.cargo holds
D.the engine room
A.penetrates to the bottom of the fire
B.is kept saturated with low-velocity water fog
C.mixes with the burning fuel oil
D.completely covers the top of the burning liquid
A.Conduction of heat to adjacent surfaces
B.Direct radiation
C.Convection
D.All of the above
最新試題
Halon extinguishes fire primarily by（）.
Foam-type portable fire extinguishers are most useful in combating fires involving（）.
How is the external flotation bladder of an immersion suit inflated?（）
Halon extinguishes a fire by（）.
Foam extinguishes a fire by（）.
Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.
Halon extinguishers used on a class C fire should be directed at the（）.
Fire alarm system thermostats are actuated by（）.
Foam extinguishes a fire by（）.
Fire hose couplings（）.