第25题: [单项选择]Passage Three Questions 32 to 35 are based on the passage you have just heard. A. The students attended class twice a week. B. Men were quite active during the classes. C. Dennis and James were great friends, D. The teacher was not supposed to assign homework. 参考答案:D 答案解析:[听力原文] What can be interred from the passage
第34题: [单项选择]可以区分大肠埃希菌和变形杆菌的试验是() A. 动力试验 B. 吲哚试验 C. 葡萄糖发酵试验 D. 尿素分解试验 E. 甲基红试验 参考答案:D
第35题: [单项选择]隧道掘进时,中隔壁适用于土层或不稳定岩体,施工方法为( )。 A. 台阶法 B. 注浆加固法 C. 先拱后墙法 D. 上下导洞法 参考答案:A 答案解析:中隔壁适用于土层或不稳定岩体,施工方法为台阶法。为施工安全,将一个大断面分为上、下、左、右四部分,各部分分开开挖、支护、闭合,自成一独立小单元。一般规定先施工拱部(即上半部),而后做下台阶及仰拱。各小