单项选择题

A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the（）.

A.fire hose might be damaged by cargo operations
B.vessel is in port
C.fire-main system is not charged
D.fire pumps are used for purposes other than supplying water to the fire main

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单项选择题

If you are fighting a fire below the main deck of your vessel，which action is most important concerning the stability of the vessel?（）.

A.Shutting off electricity to damaged cables
B.Pumping fire-fighting water overboard
C.Maneuvering the vessel so the fire is on the lee side
D.Removing burned debris from the cargo hold

单项选择题

It is necessary to secure the forced ventilation to a compartment where there is a fire to（）.

A.allow the exhaust fans to remove smoke
B.extinguish the fire by carbon monoxide smothering
C.prevent additional oxygen from reaching the fire
D.protect fire fighting personnel from smoke