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
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?（）.
Extended cyclical variations in tensions will cause an anchor chain to break due to（）.
Manila slings should not be used to load（）.
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（）.
Galvanizing would be suitable for protecting wire rope which is used for（）.
Chafing gear is used to（）.
An anchor winch should be equipped with mechanical brakes capable of holding（）.
The strongest method of forming an eye in wire rope is using（）.
Limit switches on gravity davits should be tested by（）.
The standing part of a tackle is（）.