单项选择题
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
The straight stream capability of an all-purpose nozzle...
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
The sprinkler system of a survival craft is used to（）.A...
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
The spread of fire is prevented by（）.A.cooling surfaces...
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
