制图中如何靠如何选择基准?
参考答案:
设计基准的选择应量做到设计基准、工艺基准和测量基准的统一。这样可以减少加工误差,方便测量和检验。
—Do you like western food?
—No, The food of our country is _____ that of western countries.[ ]
A. rather good than
B. much better than
C. more better than
D. not so good as.
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。()
A.A
B.B
C.C
D.D