Limit switches（）.<br>A:control the descent rate of a lifeboat<br>B:control the ascent rate of a lifeboat<br>C:cut off power to the winch when the lifeboat nears the final stowed position<br>D:cut off power to the winch when the lifeboat reaches the davit bumpers

Limit switches（）.
A:control the descent rate of a lifeboat
B:control the ascent rate of a lifeboat
C:cut off power to the winch when the lifeboat nears the final stowed position
D:cut off power to the winch when the lifeboat reaches the davit bumpers

出自：海船船员证

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