单项选择题
A.Preventers B.Side ropes C.Stays D.Guide lines
On your vessel，a wire rope for the cargo gear shows sig...
单项选择题On your vessel，a wire rope for the cargo gear shows signs of excessive wear and must be replaced. In ordering a new wire for this 10-ton boom，what safety factor should you use?（）
A.Three B.Five C.Six D.Seven
On an anchor windlass，the wheel over which the anchor c...
单项选择题On an anchor windlass，the wheel over which the anchor chain passes is called a（）.
A.brake compressor wheel B.devil's claw C.wildcat D.winchhead
On a long ocean tow，the bridle should be made up of two...
单项选择题On a long ocean tow，the bridle should be made up of two equal lengths of（）.
A.chain B.wire C.nylon D.manila
