單項選擇題A natural fiber rope can be ruined by dampness because it may ().

A.rot
B.shrink
C.stretch
D.unlay


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1.單項選擇題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

3.單項選擇題A monkey fist is found on a ().

A.heaving line
B.lead line
C.manrope
D.mooring line

5.單項選擇題A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? ()

A.When the towing vessel enters the fog
B.When the drilling rig enters the fog
C.When the towing vessel can no longer be seen from the rig
D.Immediately