Foam extinguishes a fire by ______.
A.shutting off the air supply
B.cooling the fuel to below ignition temperature
C.dispersing the fuel
D.removing the source of ignition
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更多“Foam extinguishes a fire by __…”相关的问题
第1题
CO2 extinguishes a fire by
A.a blanket of bubbles formed on the
B.smothering
C.cooling
D.isolating the heat from the fuel
第2题
CO2 extinguishes a fire by __________.
A.a blanket of bubbles formed on the surface of the fire
B.smothering
C.isolating the heat from the fuel
D.cooling
第3题
Halon extinguishes a fire by ______.
A.breaking the chain reaction
B.smothering the fire
C.cooling the fire
D.coating the fuel with a nonflammable surface
第4题
The BEST method of applying foam to a fire is to ______.
A.spray directly on the base of the fire
B.flow the foam down a nearby vertical surface
C.sweep the fire with the foam
D.spray directly on the surface of the fire
第5题
When compared to a high-expansion foam，a low-expansion foam will ______．
A.Be dryer
B.Be lighter
C.Be less heat resistant
D.Not cling to vertical surfaces
第8题
One of the limitations of foam as an extinguishing agent is that foam ______.
A.cannot be made with salt water
B.is heavier than oil and sinks below its surface
C.is corrosive and a hazard to fire fighters
D.conducts electricity
第9题
第10题
A.a Coast Guard inspection officer
B.the safety man aboard the unit
C.the designated person in charge of the unit
D.the manufacturer or his authorized representative
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