单项选择题

Engines for lifeboats are required to have sufficient fuel to operate for how many hours?（）

A.6 hours
B.12 hours
C.18 hours
D.24 hours

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单项选择题

If a fire occurs in the boiler room as a result of a leaking fuel line, you should FIRST （）.

A.notify the engineer on watch
B.isolate and secure the piping
C.throw sand on the fire
D.extinguish the fire using a combination nozzle with applicator

单项选择题

The four basic components of a fire are chain reaction, heat, fuel, and （）.

A.carbon monoxide
B.oxygen
C.carbon dioxide
D.any gaseous substance

单项选择题

The FIRST step to take in fighting an engine room fire resulting from a ruptured fuel oil service line, is to （）.

A.evacuate all engine room personnel
B.fight the fire with hand portable extinguishers
C.activate the main CO₂ bank
D.stop the flow of leaking fuel oil