人类活动对流域产沙有何影响?怎样才能有效地减少河流泥沙?

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问题:

人类活动对流域产沙有何影响?怎样才能有效地减少河流泥沙?

考点:工程水文学工程水文学题库
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完成句子。

根据括号内的汉语提示,用句末括号内的英语单词完成句子。

1. Our new country was founded in 1949,and the last 60 years _____ (见证了)the great changes

    in our country. ( see)

2. — I'm afraid that I have no time to go there.

    — That is such an important area____(以至于你应 当参观).( visit)

3. I saw Tom and his parents shopping five minutes ago, so he _____ (不可能正在复习)his lessons

   in the classroom now.( go)

4. — We really____(感谢)when Jenny offered to help.

    — She is always ready to help others.( appreciate)

5. Was it in 1969 that the American astronaut____(成 功登陆)the moon?( succeed)

6. The salesgirl showed me a silk dress____(它的颜色) I think might run in the wash.( color)

7. Great changes have taken place in this city. It is no longer _____ (它20年前的样子).( what)

8. He played the piano____(和他妈妈一样好).(as well)

9. The film Hero____(这周六上映).Shall we go and see it?( show)

10. With a lot of work____(要完成),I spared no time to attend his birthday party.( get)

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一块砖长22cm,宽18cm,要铺成一个正方形地面,铺成的正方形边长至少为多少厘米?至少要多少这样的砖?

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伤残证件损毁、遗失的如何办理?

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水轮机转轮为什么要进行静平衡试验?

题型:问答题 简答题

如果出水点在水下,要注意观察有无鼓水、翻花、冒泡现象,该位置可能是出逸点。

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