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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1.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

3.單項選擇題Manila slings should not be used to load（）.

A.cotton
B.lumber
C.steel
D.tires

4.單項選擇題Manila lines in which the strands are right-hand laid（）.

A.should be coiled in a clockwise direction
B.should be coiled in a counterclockwise direction
C.may be coiled either clockwise or counterclockwise
D.should never be coiled

5.單項選擇題Limit switches on gravity davits should be tested by（）.

A.the engineers，from a panel in the engine room
B.shutting off the current to the winch
C.pushing the switch lever arm while the winch is running
D.All of the above