单项选择题
A.Using a medium graphite grease as a lubricant B.Operating a winch too slow C.Using a sheave with an undersized throat D.A sheave diameter of 24 times the wire's diameter
Which type of link is generally used to connect shots o...
单项选择题Which type of link is generally used to connect shots of anchor chain（）.
A.Detachable B.Open C.Pear shaped D.Stud link
Which tackle arrangement has the LEAST mechanical advan...
单项选择题Which tackle arrangement has the LEAST mechanical advantage（）.
A.Single whip B.Gun tackle C.Luff tackle D.Twofold purchase
Which mooring line prevents sideways motion of a vessel...
单项选择题Which mooring line prevents sideways motion of a vessel moored to a pier（）.
A.A line led forward from the bow B.A line led aft from the bow C.A line led in the same direction as the keel D.A line led at a right angle to the keel
