安全负荷量（）

A. the load
B. safe working load
C. safe working
D. safe loading work

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单项选择题

A. low-speed control
B. inching control
C. high-speed control
D. slow-speed control

单项选择题

A. dangerous cargo
B. flammable cargo
C. light cargo
D. heavy cargo

单项选择题

A. deck cargo
B. unpacked cargo
C. packed cargo
D. inboard cargo

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