單項(xiàng)選擇題

A snatch block is a（）.

A.block used only with manila rope
B.chock roller
C.hinged block
D.strong block used for short，sharp pulls

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A shepherd’s crook is used to（）.

A.lower spring buoys into the water
B.find an anchor after the buoy has been lost
C.transfer a pennant wire to the anchor handling boat
D.clean chain as it is hauled into the rig

單項(xiàng)選擇題

A sheepshank is used to（）.

A.keep a line from fraying
B.join lines of unequal size
C.stop off a line
D.shorten a line

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