單項選擇題A 6x12,two-inch wire rope has().

A.12 strands and a two-inch diameter
B.12 strands and a two-inch circumference
C.6 strands and a two-inch diameter
D.6 strands and a two-inch circumference


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1.單項選擇題Back-up wires on a towed vessel provide().

A.a factor of safety
B.additional strength
C.a distribution of the towing load
D.All of the above

2.單項選擇題A whipping is().

A.a messenger
B.a stopper for nylon line
C.a U-bolt for securing a cargo whip to the winch drum
D.turns of twine around a rope end

3.單項選擇題The only wire rope termination which may be made in the field is().

A.swaged socket
B.thimbled mechanical splice
C.hand splice
D.spelter poured and resin sockets

4.單項選擇題Cribbing is().

A.wooden blocks or dunnage placed between a deck load and the deck
B.the chains and shackles used to secure a deck cargo
C.a crate in which a deck cargo is packaged
D.cardboard separation pieces placed between deck loads to prevent chafing

5.單項選擇題The strongest method of forming an eye in wire rope is using().

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