A.swaged socket
B.thimbled mechanical splice
C.hand splice
D.spelter poured and resin sockets
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A.give flexibility
B.support the strands laid around it
C.allow some circulation around the strands
D.allow lubrication inside the rope
A.Gun tackle
B.Luff tackle
C.Two-fold tackle
D.Double-luff tackle
A.cotton
B.lumber
C.steel
D.tires
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
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
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A splice that can be used in running rigging，where the line will pass through blocks，is a（）.
A whipping on a fiber line（）.
The size of wire rope is determined by the（）.
Anchor shackles should have a breaking strength that is（）.
In securing a towing cable，consideration must be given to letting go in an emergency. The possible whip of towlines when released can be overcome by（）.
The purpose of a devil’s claw is to（）.
The main function of the core of a wire rope is to（）.
The rope which is the lightest is（）.
Herringbone is a term associated with（）.
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?（）.