【判断题】野外测量休息时,周围没有坐的物体,可用水准标尺来代替。
【单选题】夹具的公差主要根据实践经验来确定的,未注形位公差的加工面按国家标准中的( )精度选取。
【单选题】一组数据中出现次数最多的变量值称为()。
【单选题】在.NET中,.NET Framework 由( )组成
【简答题】A.The Net is healthier than TV. B.The Net is not healthy for people. C.The Net does not help with people's communication. D.The Net does no good to people's psychological well-being.
【单选题】一组数据中出现次数最多的变量值称为( ).
【单选题】Recently in China, the brain drain has been ______. That is to say, t here has been a _______ of the process across China. [ ]