问题
名词解释
正台阶法
答案
参考答案:
先开挖隧道的上半断面,待开挖到一定距离后在同时开挖下半断面的施工方法。根据上半断面超前距离的不同,可分为长台阶法、短台阶法及微台阶法(超短台阶)法。
正台阶法
参考答案:
先开挖隧道的上半断面,待开挖到一定距离后在同时开挖下半断面的施工方法。根据上半断面超前距离的不同,可分为长台阶法、短台阶法及微台阶法(超短台阶)法。
阅读下面的短文,回答问题。 | ||||
This weekend, I am going to have a busy day. On Saturday, I am going to the supermarket by bus. There I'm going to buy some vegetables. Then I'm going to buy some books in the bookstore. On Sunday, I'm going to play basketball in the morning. In the afternoon. I'm going to visit my friends.
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