A.riding pawl
B.buckler
C.devil's claw
D.locking ring
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A.short splice
B.long splice
C.back splice
D.spindle splice
A.boat fall
B.fairlead
C.riding pawl
D.topping lift
A.block used only with manila rope
B.chock roller
C.hinged block
D.strong block used for short，sharp pulls
A.batten
B.bench hook
C.awl
D.fid
A.decreases the size of the line
B.should be used if the line is going through a block
C.should only be used in wire rope
D.doubles the size of the line
最新試題
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（）.
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 purpose of a devil’s claw is to（）.
Galvanizing would be suitable for protecting wire rope which is used for（）.
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（）.
Extended cyclical variations in tensions will cause an anchor chain to break due to（）.
After deploying the anchor，a permanent chain chaser is（）.
A whipping on a fiber line（）.
Anchor shackles should have a breaking strength that is（）.