单项选择题
On cargo booms，preventers are（）.
A.auxiliary guys
B.extra fair leads
C.steel bands
D.stops
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相关考题
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单项选择题
Mechanical gearing of deck machinery such as the windlass or boat hoists should（）.
A.be open to view so，if a foreign object gets in the gearing，the operator can immediately stop the machinery
B.have a guard over the gearing
C.be painted a contrasting color from the base color in order to call attention to the gearing
D.not be operated if there is any crew within 10 feet of the machinery -
单项选择题
Lines or gear NOT in use should be（）.
A.conspicuously marked
B.stowed anywhere
C.left on deck
D.secured or stowed out of the way -
单项选择题
Laying out a line in successive circles flat on deck with the bitter end in the center is known as（）.
A.coiling
B.faking
C.flemishing
D.lining
