A. two weeks B. four weeks C. two years D. four years 参考答案:D 答案解析:[关键词语] begin training,four weeks old,flying career, four years [详细解答] 只要排除迷惑选项的干扰并抓住关键词,答案就容易找到。该
第15题: [单项选择]诊断X线机准直器的种类不包括() A. 手动式 B. 圆形射野式 C. 三角形射野式 D. 平板式 E. 全自动式 参考答案:C
第33题: [单项选择]关于加工中心的特点描述不正确的是()。 A. 工序集中 B. 加工精度高 C. 加工对象适应性强 D. 加大了劳动者的劳动强度 参考答案:D
第34题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. Company and customer. B. Repairman and customer. C. Teacher and student’s parent. D. Wire and husband. 参考答案:A 答案解析:[听力原文] W: Listen, the heating is broken in my room. When are you going to come and fix it M: