在通信架空杆路中,普遍土、硬土设7/2.6拉线深时,拉线洞应有的洞深度是()米 A.

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问题:

在通信架空杆路中,普遍土、硬土设7/2.6拉线深时,拉线洞应有的洞深度是()米

A.1.4

B.1.3

C.1.5

考点:登高架设作业操作证高处作业基础知识高处作业基础知识题库
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You’ve switched the machine off. I told you not to,_____?

A.didn't I

B.haven't you

C.will you

D.did I

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根据句意、首字母提示或汉语完成单词。

1. She is s_____ money to buy a new bike.

2. I hope you can p_____ me with some information about next vacation.

3. Badaling is one of vacation s_____.

4. The park is beautiful, but it's become a bit too _____ (游客太多的).

5. The new shop has taken away most of my _____ (顾客).

6. The firm o_____ us a good chance to go abroad.

7. The beautiful girl has a f_____ voice.

题型:多项选择题

下列化学实验符合“绿色化学”的有(  )

①在萃取操作的演示实验中,将CCl4萃取溴水改为CCl4萃取碘水

②在铜和浓硝酸反应的实验中,将铜片改为可调节高度的铜丝

③将实验室的废酸液和废碱液中和后再排放.

A.①②③

B.①③

C.②③

D.①②

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为保证各楼层的窗户上下对齐,应在外墙吊铅垂线,标示窗口的中心线或外边线。

题型:多项选择题

近代中国丧失领土主权开始于()

A.将尼布楚让俄国

B.割香港岛给英国

C.割库页岛给俄国

D.割台湾给日本

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