第7题: [单项选择]以下关于焊料焊接的说法,错误的是()。 A. 又叫钎焊或钎接 B. 焊接时被焊金属熔化 C. 对材料性能影响较小 D. 焊料与焊件的成分不同 E. 可以连接异质合金 参考答案:B 答案解析:焊料焊接时焊料熔化,被焊金属处于固态,因而对材料性能影响较小。
第8题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. She will help the man find the exhibit. B. She has already seen the exhibit. C. She will help the man read the map. D. She knows where to get a map. 参考答案:A 答案解析:[听力原文]
M: Hi, I have a map of the campus, but I still can’t find the building with the new sculptur