单项选择题
Which will cause a wire rope to fail（）.
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
单项选择题 Which type of link is generally used to connect shots of anchor chain（）.
单项选择题 Which tackle arrangement has the LEAST mechanical advantage（）.
单项选择题 Which mooring line prevents sideways motion of a vessel moored to a pier（）.
