【单选题】I tried very hard to persuade him to join our group but I met with a______ refusal.
【单选题】I tried very hard to persuade him to join our group but I met with flat ______.
【单选题】I tried very hard to persuade him to join our groups but I met with fiat ______.
【判断题】兆欧表测量绝缘电阻时,兆欧表的“L”端接地,“E”端接被试物。
【简答题】传动轴(半轴)功用是把变速器的转矩传递到 驱动桥 上。
【简答题】物料衡算的基准包括 、单位质量、单位体积