A.8the heat of a fire melting the link
B.a break-glass and pull-cable system
C.electrical controls on the bridge
D.a mechanical arm outside the vent duct
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A.solid materials such as wood or bales of fiber
B.inflammable liquids
C.electrical equipment
D.metallic solids
A.it provides cooling as a secondary effect
B.works well on extinguishing electrical fires
C.can be used to combat combustible metal fires
D.All of the above
A.cooling
B.chemical action
C.smothering
D.inerting the air
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
最新試題
How do you operate a portable CO2 fire extinguisher?（）.
Fire may be spread by which means?（）.
CO2 cylinders，which protect the small space in which they are stored must（）.
How is the external flotation bladder of an immersion suit inflated?（）
Flame screens are used to（）.
Halon extinguishers used on a class C fire should be directed at the（）.
Fire fighting equipment requirements for a particular vessel may be found on the（）.
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
Halon from extinguishers used on a class B fire，should be directed（）.
CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.