单项选择题

When fighting a spreading fire resulting from a broken fuel line, you should FIRST （）.

A.look for a CO₂ extinguisher
B.use a soda acid extinguisher
C.shut off the fuel supply
D.smother the fire with rags

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单项选择题

The three basic elements necessary for any fire are （）.

A.heat, gas, and flames
B.fuel, heat, and oxygen
C.heat, nitrogen, and fuel
D.fuel oil, nitrogen, and oxygen

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

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