A.keeps the ends from fraying
B.strengthens it
C.protects your hands
D.becomes part of a splice
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A.a messenger
B.a stopper for nylon line
C.a U-bolt for securing a cargo whip to the winch drum
D.turns of twine around a rope end
A.boom
B.lift
C.raise
D.tackle
A.riding pawl
B.buckler
C.devil's claw
D.locking ring
A.short splice
B.long splice
C.back splice
D.spindle splice
A.boat fall
B.fairlead
C.riding pawl
D.topping lift
最新試題
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 stopper used in securing the ground tackle for sea that consists of a grab attached to a turnbuckle is a（）.
The purpose of a devil’s claw is to（）.
Manila slings should not be used to load（）.
The main function of the core of a wire rope is to（）.
The size of wire rope is determined by the（）.
A splice that can be used in running rigging，where the line will pass through blocks，is a（）.
Manila lines in which the strands are right-hand laid（）.
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（）.
Chafing gear is normally used（）.