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
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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
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
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
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Fire extinguishers of sizes III,IV,and V are designated as().
Foam-type portable fire extinguishers are most useful in combating fires involving().
Firefighting foam is only effective when the foam().
How do you operate a portable CO2 fire extinguisher?().
CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when().
Fire may be spread by which means?().
Except in rare cases,it is impossible to extinguish a shipboard fire by().
Good housekeeping on a vessel prevents fires by().
Fire hose couplings().
Flames from small leaks of LFG may be extinguished by().