A.cooling
B.chemical action
C.smothering
D.inerting the air
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A.smothering the burning material
B.chemical combination with burning material
C.absorbing the burning material
D.organic destruction of the burning material
A.shutting off the air supply
B.cooling the fuel to below ignition temperature
C.dispersing the fuel
D.removing the source of ignition
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
最新試題
Foam extinguishes a fire by（）.
CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.
Firefighting foam is only effective when the foam（）.
Halon extinguishers used on a class C fire should be directed at the（）.
Fire hose couplings（）.
Fire alarm system thermostats are actuated by（）.
Fire extinguishing agents used on Class C fires must be（）.
Gas masks（）.
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
High-velocity fog（）.