单项选择题
A.6 hours B.12 hours C.18 hours D.24 hours
If a fire occurs in the boiler room as a result of a le...
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
The four basic components of a fire are chain reaction,...
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
The FIRST step to take in fighting an engine room fire ...
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
