单项选择题

Never（）stowed like this.

A.optional cargo should be
B.should optional cargo be
C.should be optional cargo
D.should optional cargo

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单项选择题

A.GM
B.the vertical center of gravity
C.the longitudinal center of gravity
D.the stress on the hull

单项选择题

A.Brick method
B.Cross tier method
C.Full-bag method
D.Half-bag method

单项选择题

A.dock riser
B.ships cargo tanks
C.shore tank discharge
D.All of the above