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
最新試題
The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to（）.
The standing part of a tackle is（）.
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?（）.
Limit switches on gravity davits should be tested by（）.
A splice that can be used in running rigging，where the line will pass through blocks，is a（）.
If an attempt is made to hoist a load that exceeds the capacity of an electric winch，an overload safety device causes a circuit breaker to cut off the current to the winch motor（）.
After deploying the anchor，a permanent chain chaser is（）.
If kinking results while wire rope is being coiled clockwise，you should（）.
Manila lines in which the strands are right-hand laid（）.
Cribbing is（）.