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谈谈防治消化道传染病应注意哪些问题？

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If you _____your work, you can go there first.
A：will finish
B：finished
C：finishing
D：have finished

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The length of chain between the anchor and the end of the pendant line is called the ______．

A. Pigtail chain
B. Thrash chain
Crown chain
D. Wear chain

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Your vessel is crossing a narrow channel．A vessel to port is within the channel and crossing your course．She is showing a black cylinder．What is your responsibility ________．

A. Hold your course and speed
B. Sound the danger signal
C. Begin an exchange of passing signals
Do not cross the channel if you might impede the other vessel

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We must take some measures to control the pollution. (英译汉)

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谈谈防治消化道传染病应注意哪些问题？

If you _____your work, you can go there first.A：will finishB：finishedC：finishingD：have finished

The length of chain between the anchor and the end of the pendant line is called the ______．

Your vessel is crossing a narrow channel．A vessel to port is within the channel and crossing your course．She is showing a black cylinder．What is your responsibility ________．

We must take some measures to control the pollution. (英译汉)

If you _____your work, you can go there first.
A：will finish
B：finished
C：finishing
D：have finished