第4题: [多项选择]根据《水工建筑物地下开挖工程施工技术规范》(SDJ212—83)，特大断面洞室(或大断面隧洞)采用先拱后墙法施工时，拱脚开挖应符合的要求有______。 A. 拱脚线的最低点至下部开挖面的距离，不宜小于1.5m B. 拱脚线的最低点至下部开挖面的距离，不宜小于2.5m C. 拱脚及相邻处的边墙开挖，应有专门措施 D. 拱脚线的最低点至下部开挖面的距离，不宜小于3.5m E. 拱脚线的最低点至下部开挖面的距离，不宜小于4.5m 参考答案:A,C 答案解析:[解析] 本题考查的是水利工程土方施工的内容。特大断面洞室(或大断面隧洞)采用先拱后墙法施工时，拱脚开挖应符合的要求：(1)拱脚线的最低点至下部开挖面的距离，不宜小于1.5m；(2)拱脚及相邻处的边墙
第10题: [单项选择]The blunder of Argentina's goalie cost them the game in the match against Brazil.
A. triumph B. beat C. mistake D. straggle 参考答案:C 答案解析:[解析] 本题中，blunder的意思是“失误”。C项“mistake错误”符合题意，如：There must be some mistake in this bill，please add up t
第21题: [单项选择]Questions 26 to 28 are based on the passage you have just heard. A. Because its definition is complex. B. Because there are too many landmarks. C. Because it is a journey that never ends. D. Because the distance is too long to measure. 参考答案:C 答案解析:[听力原文]26-28 There are two basic ways to see growth: one as a product, the other as a process.
