During a training exercise a submarine indicating that a torpedo has been fired will send up smoke from a float. The smoke’s color will be（）.

During a fire drill on a ship，what action is required?（）

A.Start each fire pump
B.Launch and run a lifeboat
C.Inventory rescue and fire equipment
D.Inspect fire hoses

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Due to the hazards involved with Halon extinguishers on a ship，the size II extinguisher may only be used（）.

A.outside
B.on class C fires
C.in an emergency
D.on class B fires

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