一般规律是粒度越粗,Ep越(),I越()。
A.大、小
B.小、大
C.大、大
D.小、小
参考答案:D
—Excuse me. How can I get to the bookstore?
—Sorry! I don’t know. I am new here.
— __________
A. The same to you! B. Thank you all the same. C. Of course.
旋压可使板料成型出()零件或对空心零件进行翻边、胀形等加工。
A.实心回转体
B.空心圆柱体
C.变异型形体
D.空心回转体