A.breaking the chain reaction
B.smothering the fire
C.cooling the fire
D.coating the fuel with a nonflammable surface
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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
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
最新試題
Except in rare cases，it is impossible to extinguish a shipboard fire by（）.
Flame screens are used to（）.
Foam extinguishes a fire by（）.
CO2 cylinders，which protect the small space in which they are stored must（）.
Fire alarm system thermostats are actuated by（）.
How do you operate a portable CO2 fire extinguisher?（）.
Control valves of a CO2 system may be located within the protected space when（）.
High-velocity fog（）.
Halon from extinguishers used on a class B fire，should be directed（）.
Foam-type portable fire extinguishers are most useful in combating fires involving（）.