氢气处理中出现的水垢如何清除?

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问题:

氢气处理中出现的水垢如何清除?

考点:氯碱操作工考试氯碱操作工考试题库
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Hello, I'm Tom. I'm a middle school student. It's nice to meet you here. First, let me tell you 46  about my family. There are five people in my 47 .They are my mother, my father, my sister, my brother and I.
My father is a worker. My mother is an English teacher. My sister is eighteen and my brother is sixteen. I'm fourteen. We  48  go to the same school. We all enjoy 49  football games.
My 50  is in West Street. There is a big tree and some small trees around my house. The big one is a pear tree and the small ones are apple  51 .  52 there 53 any pears or apples on them now.  54  a photo of my house. In the photo, you can see three cats in my house. They are all black and white. We  55 them very much.
小题1:
A.anythingB.something C.thingD.anyone
小题2:
A.schoolB.houseC.roomD.family
小题3:
A.twoB.fiveC.threeD.six
小题4:
A.seeingB.looking atC.watching D.looking
小题5:
A.bedB.schoolC.roomD.home
小题6:
A.treesB.riversC.housesD.schools
小题7:
A.ButB.AndC.SoD.Or
小题8:
A.isn'tB.isC.areD.aren't
小题9:
A.He'sB.Here'sC.It'sD.There are
小题10:
A.are liking B.likesC.likeD.is liking
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请选出下列句子说法无误的一句[ ]

A.现代著名女作家冰心写了很多自由体小诗,这些小诗手法含蓄委婉,语言清新明丽,被称为“冰心体”,结集为《繁星》《春水》两部诗集。

B.小说三要素是指人物、高潮和环境。

C.“这时候,我的脑里忽然闪出一幅神异的图画来。”这句话的主干是:我的脑里闪出神异的图画。

D.“春天像一篇巨制的骈俪文,夏天像一首绝句。”这句话用了比喻、对偶的修辞手法。

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单台空预器运行,锅炉可带()额定负荷。

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最近,英国科学家发现了人类记忆力衰退的原因,这个原因是()。

A. 神经细胞恢复机能时间延长

B.智力衰退

C. 脑血管老化

D.脑细胞减少

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化工装置中,保温的用途有()。

A、节能、减少热量散失

B、防冻防凝

C、防腐

D、防烫

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