【简答题】在机械加工中,经常采用 的统计分析法中,( )没有考虑工件的加工顺序,所以不能区分变值系统误差和( )。
【判断题】Chinese food is roughly divided into northern and southern styles of cooking.()
【判断题】Northern Chinese like eating Niangao while southern Chinese like Jiaozi. ( )
【判断题】Compared with northern Chinese gardens, The gardens in the south are smaller but no less exquisite.
【单选题】Chinese dumplings have become a specialty in the northern part of China because of ____.
B.
the cold and dry weather
D.
the available stuffing
【简答题】砂的粗细用()表示,颗粒级配用()或()来判定。骨料级配良好的标准为:空隙率(),总表面积()。
【单选题】Where do most of the Chinese people live in San Francisco?
B.
In the northern part of the city.
【简答题】误差统计分析法中常用的有( ),( )。其中能平行指导生产过程的是( )。
【简答题】机械加工中误差统计分析常用的方法有哪些,各有何特点?