单项选择题

The most important reason for taking anti-seasickness pills as soon as possible after entering a liferaft is to（）.

A.assist in sleeping
B.reduce appetite by decreasing nausea
C.prevent loss of body moisture by vomiting
D.prevent impaired judgement due to motion-induced deliriousness

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单项选择题

The limit switches on a ships survival-craft winch system（）.

A.stop the winch just before the craft reaches the final stowage position
B.limit the amount of cable on the drum
C.limit the ascent rate
D.stop the winch in case the craft weighs too much

单项选择题

The lights on the outside of the canopy on an inflatable liferaft operate（）.

A.by turning the globe clockwise
B.by a switch at each light
C.by a light sensor
D.automatically when the raft is inflated

单项选择题

The inside light in an inflatable liferaft is turned on（）.

A.automatically as the liferaft inflates
B.with a switch near the boarding handle
C.at night because the light has a photosensitive switch
D.by screwing the bulb in after the raft is inflated