单项选择题

Each open lifeboat carried on a vessel on an international voyage must have（）.

A.hand-propelling gear
B.a davit span with at least 2 lifelines
C.a mast and a sail
D.a motor

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单项选择题

Each lifeboat must be lowered and maneuvered in the water at least once every（）.

A.2 months
B.3 months
C.4 months
D.5 months

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 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