A.three wire rope clamps
B.an eye splice with four or five tucks
C.a thimble fastened with four or five tucks
D.a wire rope socket attached with zinc
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A.all the fall except the hauling part
B.the hook that engages the weight to be moved
C.that part to which power is applied
D.that part of the falls made fast to one of the blocks
A.forming temporary eyes in lines
B.joining two lines of equal size
C.keeping line from unlaying or fraying
D.joining two lines of different size
A.number of strands
B.number of wires in each strand
C.circumference
D.diameter
A.raise the boom
B.raise the hook
C.raise the boom and hook
D.check the boom stop
A.manila
B.nylon
C.polypropylene
D.dacron
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Galvanizing would be suitable for protecting wire rope which is used for（）.
At the instant when a string of casing being run from a ship is landed in the well head,（）.
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（）.
A stopper used in securing the ground tackle for sea that consists of a grab attached to a turnbuckle is a（）.
Chafing gear is normally used（）.
The size of wire rope is determined by the（）.
Anchor shackles should have a breaking strength that is（）.
The standing part of a tackle is（）.
A tackle by which the outer end of a boom is raised and lowered is the topping（）.
Extended cyclical variations in tensions will cause an anchor chain to break due to（）.