单项选择题

A tackle is two blocked when the blocks are（）.

A.equally sharing the load
B.jammed together
C.as far apart as possible
D.rove to the highest mechanical advantage

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A.generally shorter than the others and is used to steer with
B.is longer than the others and is used as the stroke oar
C.is raised in the bow of the boat for the steersman to steer by
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A stopper is（）.

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A stay is（）.

A.standing rigging
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