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單項選擇題

Please stand-by（）channel 12.

A.to
B.on
C.at
D.in

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單項選擇題

Please use these bags to make a wall in the hold and leave the（）for ballasting.

A.another
B.else
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單項選擇題

The check under shipowner’s organization made at the loading port is to avoid accepting cargo（）upon receipt.

A.in sufficient packing
B.in weak condition
C.in correct number
D.in good orde

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