A.fatigue
B.corrosion
C.distortion
D.abrasion
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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.has less strength than manila line
B.has more strength than manila line
C.is equivalent to manila line
D.will rot quicker than manila line
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In moderate wind and current what should be the length of chain with a single anchor?（）
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At the instant when a string of casing being run from a ship is landed in the well head,（）.
A whipping on a fiber line（）.
A splice that can be used in running rigging，where the line will pass through blocks，is a（）.