第5题: [单项选择]下列关于风动工具凿除喷护混凝土不正确的是()。 A. 各部管道接头应紧固,不漏气;胶皮管不应缠绕打结,并应用折弯风管的办法作断气之用,不应将风管置于胯下 B. 风管通过过道,应挖沟将风管下埋 C. 风管连接风包后要试送气,检查风管内有无杂物堵塞;送气时,要缓慢旋开阀门,不应猛开 D. 钎子插入风动工具后不应空打 参考答案:A
第14题: [单项选择]A. She was as great as the author Alice Walker. B. She was not a good model for career-oriented women. C. She has the qualities as the First Lady. D. She was very popular among students. 参考答案:B 答案解析:[解析] Q: What did the students think of Barbara Bush