单项选择题
A.act as a chain stopper B.prevent the windlass from engaging C.prevent the chain from fouling on deck D.control the wildcat
The only wire rope termination which may be made in the...
单项选择题The only wire rope termination which may be made in the field is（）.
A.swaged socket B.thimbled mechanical splice C.hand splice D.spelter poured and resin sockets
The main function of the core of a wire rope is to（）.A....
单项选择题The main function of the core of a wire rope is to（）.
A.give flexibility B.support the strands laid around it C.allow some circulation around the strands D.allow lubrication inside the rope
Neglecting friction，you desire to lift a 300 kgs weight...
单项选择题Neglecting friction，you desire to lift a 300 kgs weight with a stress on the hauling part of 100 kgs.Which of the following tackles would you use?（）.
A.Gun tackle B.Luff tackle C.Two-fold tackle D.Double-luff tackle
