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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A.a factor of safety
B.additional strength
C.a distribution of the towing load
D.All of the above
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
A.swaged socket
B.thimbled mechanical splice
C.hand splice
D.spelter poured and resin sockets
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
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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最新試題
A whipping is().
A whipping on a fiber line().
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?().
Manila lines in which the strands are right-hand laid().
Back-up wires on a towed vessel provide().