单项选择题

The Chief Tally would like to inquire（）the rotation of the discharging ports.

A.at
B.on
C.about
D.after

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单项选择题
The cargo，when（），should be completely covered with plastic.

A.stow
B.stowing
C.stowed
D.be stowed
单项选择题
The cargo is liable to burn.Please keep it（）the engine room.

A.out of
B.away from
C.from away
D.out from
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