单项选择题

PULL THE STRINGS AROUND YOUR WAIST AND TIE IN FRONT. This description is likely used in（）.

A.fire fighting operations
B.salvage operations
C.cargo operations
D.manoeuvering operations

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单项选择题

Prior to lowering the lifeboat，the most important item to check is the（）.

A.oars
B.sail
C.boat plug
D.life preservers

单项选择题

On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.

A.keep the movement of the davits at the same speed
B.keep the davits from slipping when they are in the stowed position
C.prevent vibration during lowering of the boat
D.support the manropes

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On a passenger vessel，the vessel’s name must appear on（）.

A.ring life buoy
B.lifeboats
C.lifeboat oars
D.All of the above