單項(xiàng)選擇題

The standing part of a tackle is（）.

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

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單項(xiàng)選擇題

The square knot is used for（）.

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

單項(xiàng)選擇題

The size of wire rope is determined by the（）.

A.number of strands
B.number of wires in each strand
C.circumference
D.diameter