单项选择题

The majority of cargo gear breakdowns are a result of（）.

A.Guy failures
B.Topping lift failures
C.Bending of the boom from compression
D.Gooseneck failure

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单项选择题

A.is capable of bringing
B.is sufficient to bring
C.is not capable of bringing
D.is probally to bring

单项选择题

A.ships arrive at random
B.cargo-handling time varies greatly
C.ships have to queue to get onto berths
D.ships do not have to wait to get onto berths

单项选择题

A.breakdown
B.breaked down
C.broken down
D.broke down