Each fire hose coupling on a ship must have threads tha……

单项选择题During the required periodic abandon ship drill aboard a ship，each person not assigned duties in the muster list is（）.

A.instructed in the use of portable fire extinguishers
B.shown a video demonstrating lifeboat launching
C.instructed in the use of life jackets
D.not required to attend the boat drill

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

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