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
您可能感興趣的試卷
你可能感興趣的試題
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
A.salt water and a wire brush
B.caustic soap
C.mild soap and fresh water
D.a holystone
最新試題
High-velocity fog（）.
How does foam extinguish an oil fire?（）.
Flames from small leaks of LFG may be extinguished by（）.
How is the external flotation bladder of an immersion suit inflated?（）
Halon fire extinguishers are NOT effective when used on which types of fires?（）
Foam extinguishes a fire by（）.
How do you operate a portable CO2 fire extinguisher?（）.
Foam-type portable fire extinguishers are most useful in combating fires involving（）.
Flame screens are used to（）.
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.