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
How do you operate a portable CO2 fire extinguisher?（）.
Fire and abandon ship stations and duties may be found on the（）.
Firefighting foam is only effective when the foam（）.
CO2 cylinders，which protect the small space in which they are stored must（）.
Foam extinguishes a fire by（）.
Fire fighting equipment requirements for a particular vessel may be found on the（）.
Fire extinguishing agents used on Class C fires must be（）.
Foam-type portable fire extinguishers are most useful in combating fires involving（）.
Fire extinguishers of sizes III，IV，and V are designated as（）.
Flame screens are used to（）.