A.cooling
B.smothering
C.shielding of radiant heat
D.breaking the chain reaction
您可能感興趣的試卷
你可能感興趣的試題
A.breaking the chain reaction
B.smothering the fire
C.cooling the fire
D.coating the fuel with a nonflammable surface
A.base of the equipment
B.top of the equipment
C.power source
D.source of the fire
A.allowing better access in an emergency
B.eliminating potential fuel sources
C.eliminating trip hazards
D.improving personnel qualifications
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
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
最新試題
How does foam extinguish an oil fire?（）.
Except in rare cases，it is impossible to extinguish a shipboard fire by（）.
Flames from small leaks of LFG may be extinguished by（）.
Foam-type portable fire extinguishers are most useful in combating fires involving（）.
Halon from extinguishers used on a class B fire，should be directed（）.
Fire hose couplings（）.
Firefighting foam is only effective when the foam（）.
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
Fire hose should be washed with（）.
Foam extinguishes a fire by（）.