单项选择题
The success of an indirect attack on a fire depends on the（）.
A.size of the fire when initially observed
B.complete containment of the fire
C.cooling ability of the firefighting agent
D.class of the fire
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相关考题
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单项选择题
The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.
A.shield fire fighters from radiant heat
B.break up burning material
C.get the most water possible on the fire
D.drive heat and smoke ahead of the fire fighters -
单项选择题
The sprinkler system of a survival craft is used to（）.
A.cool the craft in a fire
B.cool the engine
C.spray oil on the sea to calm it
D.spray personnel during a fire -
单项选择题
The spread of fire is prevented by（）.
A.cooling surfaces adjacent to the fire
B.leaving combustibles in the endangered area
C.increasing the oxygen supply
D.All of the above
