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單項選擇題

The well preparation of stowage plan will（）.

A.increase the ship's officers' knowledge
B.extend the ship's officers' knowledge
C.improve the ship's cargo-handling equipment
D.raise the working efficiency

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The worn-out bags are all second-hand ones（）stated in the shipping order.

A.so
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There are（）rats on board.

A.not
B.no
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D.none