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單項選擇題

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

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單項選擇題

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

單項選擇題

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

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