单项选择题
A natural fiber rope can be ruined by dampness because it may （）.
A.rot
B.shrink
C.stretch
D.unlay
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A mooring line leading at nearly right angles to the keel is a （）.
A.spring line
B.bow line
C.stern line
D.breast line -
单项选择题
A mooring line leading 45° to the keel，used to check forward or astern movement of a vessel，is called a （）.
A.spring line
B.warp line
C.bow line
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单项选择题
A monkey fist is found on a （）.
A.heaving line
B.lead line
C.manrope
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