试题与答案

往复泵的流量只与泵本身的几何尺寸和往复次数有关,与()无关。

题型:填空题

题目:

往复泵的流量只与泵本身的几何尺寸和往复次数有关,与()无关。

答案:

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参考答案:生物冶金是指在相关微生物存在时,由于微生物的催化氧化作用,将矿物中有价金属以离子形式溶解到浸出液中加以回收,或将矿物中的有害元素溶解并除去的方法。生物湿法冶金的优点:湿法冶金的工艺条件易...

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题型:填空题

综合填空。

根据首字母提示补全单词,完成短文。

      Everyone l  1    to do something when he has free time, and I do, too. What's my favorite activity? It's

s   2  . Shopping is s   3   exciting and fun. When you walking a   4   the street, you can see many different

k   5   and styles of clothes, They're really beautiful and new to me, so I find it h  6   to control(控制)myself.

I want to b  7   everything. Of c   8  , after shopping I have less m   9  , I become poor and s 10   because it

will be a long time until I have enough money for my next shopping. I can't go shopping for a long time. It's a

sorry thing for me.

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