A.Gun tackle
B.Luff tackle
C.Two-fold tackle
D.Double-luff tackle
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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
A.increasing the shaft RPM prior to release
B.using a pelican hook for quick release
C.using preventers
D.using a short chain for the lead through the stern chock
A.5 times the depth of the water in good holding ground
B.10 times the depth of the water in shallow water
C.2 times the depth of the water in poor holding ground
D.8 times the depth of the water in deep water
最新試題
Herringbone is a term associated with（）.
Anchor shackles should have a breaking strength that is（）.
A tackle by which the outer end of a boom is raised and lowered is the topping（）.
Chafing gear is used to（）.
The rope which is the lightest is（）.
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（）.
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（）.
If kinking results while wire rope is being coiled clockwise，you should（）.