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CRD法、双侧壁导坑法临时支护拆除

答案

参考答案:

在CRD法、双侧壁导坑法中,中隔板、中隔墙应在区间隧道初期支护全断面封闭成环且隧道贯通后,根据监控量测数据,确定围岩变形稳定(每天变形量小于0.5mm),区间隧道初期支护结构稳定,且可以承受围岩全部压力后,施作隧道防水层及二衬结构前,并与隧道二衬结构施工步骤相结合,分期分阶段跳段拆除。

阅读理解

阅读理解

     My friend, Emma Daniels, spent the summer of 1974 traveling in Israel. During her month-long stay in

Jerusalem she often went to a caf? called Chocolate Soup. It was run by two men, one of whom - Alex -

used to live in Montreal. One morning when Emma went in for coffee, while chatting with her new friend

Alex, she mentioned that she had just finished the book she was reading and had nothing else to read. Alex said he had a wonderful book she might like, and that he'd be happy to lend it to her. As he lived just

above the caf?, he quickly ran up to get it. The book he handed to Emma just minutes later was Markings, a book by a former Secretary-General of the United Nations (UN).

     Emma had never read it, nor had she ever bought a copy. But, when she opened it up, she was floored to see her own name and address inside the cover in her own handwriting. It turned out that the summer

before, at a concert back in Montreal, Emma had met a Californian who was in town visiting friends. They decided to exchange (交换) addresses, but neither of them had any paper. The man opened up a book he was carrying in his backpack and asked Emma to write her name and address inside. When he returned to California, he left the book behind in Montreal, and his friend Alex kept it. When Alex later moved to

Jerusalem, he took the book along.

1. Alex lent Emma the book, Markings, ________.

A. to show his interest in reading

B. to show his friendliness to her

C. to tell her about the importance of the UN

D. to let her write her name and address inside

2. How did Emma feel the moment she opened the book?

A. Pleased                  

B. Satisfied

C. Worried                 

D. Surprised

3. We can learn from the text that the Californian ________.

A. met Emma at a concert

B. invited Emma to a concert

C. introduced Emma to his friend

D. left Emma his backpack

4. Who was supposed to be the first owner of the book?

A. An official of the UN

B. Alex's friend from California

C. A friend of the author's

D. A coffee shop owner

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