單項(xiàng)選擇題If an attempt is made to hoist a load that exceeds the capacity of an electric winch，an overload safety device causes a circuit breaker to cut off the current to the winch motor（）.

A.when the line pull reaches the rated winch capacity
B.after the line pull exceeds the rated winch capacity
C.after a short build-up of torque
D.immediately


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1.單項(xiàng)選擇題Herringbone is a term associated with（）.

A.anchoring
B.mooring
C.sewing
D.splicing

2.單項(xiàng)選擇題Galvanizing would be suitable for protecting wire rope which is used for（）.

A.cargo runners
B.stays
C.topping lifts
D.All of the above

3.單項(xiàng)選擇題Extended cyclical variations in tensions will cause an anchor chain to break due to（）.

A.fatigue
B.corrosion
C.distortion
D.abrasion

4.單項(xiàng)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(xiàng)選擇題Compared to manila line，size for size，nylon line（）.

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