A.sweep flames away with water spray
B.shut off the leak
C.use a chemical foam fire extinguisher
D.call the local fire department
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A.should be worn while fighting a fire
B.can be used in atmospheres deficient in oxygen
C.filter contaminants from air that is to be breathed
D.may be substituted for a self-contained breathing apparatus
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
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
最新試題
Fire alarm system thermostats are actuated by（）.
Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.
Fire extinguishers of sizes III，IV，and V are designated as（）.
Foam is a very effective smothering agent and（）.
CO2 cylinders，which protect the small space in which they are stored must（）.
Fire and abandon ship stations and duties may be found on the（）.
Fire may be spread by which means?（）.
CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.
Halon extinguishes fire primarily by（）.
Halon extinguishes a fire by（）.