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
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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
A.closing the compartment except for the ventilators
B.completely closing the compartment
C.leaving the compartment open to the air
D.increasing the air flow to the compartment by blowers
最新試題
Firefighting foam is only effective when the foam（）.
Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.
Fire hose couplings（）.
Halon extinguishers used on a class C fire should be directed at the（）.
CO2 cylinders，which protect the small space in which they are stored must（）.
Fire hose should be washed with（）.
Halon extinguishes a fire by（）.
Foam extinguishes a fire mainly by（）.
Gas masks（）.
Flames from small leaks of LFG may be extinguished by（）.