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
Halon fire extinguishers are NOT effective when used on which types of fires?（）
CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.
Flames from small leaks of LFG may be extinguished by（）.
How is the external flotation bladder of an immersion suit inflated?（）
CO2 cylinders，which protect the small space in which they are stored must（）.
Fire hose couplings（）.
Firefighting foam is only effective when the foam（）.
Fire may be spread by which means?（）.
Fire extinguishers on inspected vessels are numbered by size I through V，with I being（）.
Fire extinguishing agents used on Class C fires must be（）.