第14题: [多项选择]关于风动工具描述正确的有()。 A. 不熟悉风动工具使用方法和修理方法的作业人员,不准擅自使用或修理风动工具 B. 风动工具的锤子、钻头等工作部件,应安装牢固,以防在工作时脱落 C. 带有工作部件的风动工具应对准人 D. 风动工具的软管应和工具连接牢固 参考答案:A,B,C,D
第16题: [单项选择]One day the man took ______ to get to the theatre by bus. A. fifteen minutes B. just twenty minute C. forty-five minutes D. over an hour 参考答案:B 答案解析:[解析] 文章提到“I got on a bus right away and arrived at the theatre in exactly twenty minutes”,故本题答案为B。
第20题:[单选题]When does the Ram Air Turbine deploy automatically? A.A.In flight,if blue hydraulic power is lost B.B.As soon as two hydraulic power systems are lost C.C.In flight,if the AC electrical power is lost 参考答案:C