单项选择题

The grip of a joint represents the（）.

A.thickness of the connected members
B.diameter of the head
C.entire length of the rivet
D.diameter of the shank

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单项选择题
The fluke angle of an anchor system is the angle between the（）.

A.flukes and the shank
B.shank and the sea bottom
C.mooring line and the sea bottom
D.flukes and the shackle
单项选择题
The fitting that allows a boom to move freely both vertically and laterally is called the （）.

A.swivel
B.lizard
C.spider band
D.gooseneck
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