单项选择题

Stretchers are fitted in lifeboats to provide a（）.

A.place for people to lie down
B.means for rigging the sail
C.place for rowers to brace their feet
D.suitable means for water to drain below the footings

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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
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C.cargo 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
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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