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
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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
A.gantline
B.life line
C.strop
D.whip
A.join two lines of different sizes
B.join two lines of equal sizes
C.add strength to a weak spot in a line
D.act as a stopper to transfer a line under strain
最新試題
The only wire rope termination which may be made in the field is（）.
A whipping is（）.
Manila slings should not be used to load（）.
The main function of the core of a wire rope is to（）.
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?（）.
The square knot is used for（）.
In moderate wind and current what should be the length of chain with a single anchor?（）
After deploying the anchor，a permanent chain chaser is（）.
If kinking results while wire rope is being coiled clockwise，you should（）.
The rolling hitch could be used to（）.