单项选择题
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（）.
A.black
B.red
C.orange
D.yellow
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单项选择题
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 -
单项选择题
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 -
单项选择题
Dry chemical fire extinguishers are effective on which type(s) of fire?（）
A.Burning oil
B.Electrical
C.Paint
D.All of the above
