第8题: [单项选择]I was in some doubt as to whether the Corporal had __________ us accidentally on his way out of the town or if he'd been deliberately tasked. A. crashed on B. bumped into C. fallen against D. puzzled about 参考答案:B
第28题: [单项选择]Question 26 is based on the following news. At the end of the news item, you will be given 5 seconds t~ answer the question. Now, listen to the news. 参考答案:B 答案解析:[解析] In October the Ugandan opposition leader, Kizza Basigye, returned to Kampala to prepare
第34题: [多项选择]关于铁素体不锈钢的焊接性下列说法错误的是()。 A. 铁素体不锈钢的焊接性比奥氏体不锈钢要好 B. σ相(一种Fe-C金属间化合物)在1Cr18Ni9Ti中经常产生 C. 铁素体不锈钢的焊接接头出现晶间腐蚀的位置主要是在接头的熔合线附近 D. 铁素体不锈钢出现晶间腐蚀也是由于Cr23C6析出后形成贫铬层的结果 参考答案:A, B