()一般有一个凸模和一个凹模,也可以有几个凸模和几个凹模,但在压力机每次行程中只能完成同一种冲裁工序。
A.复合冲裁模
B.连续冲裁模
C.简单冲裁模
参考答案:C
Try not to be absent from class again for the rest of the term. You _____ too many classes. You _____ two classes just last week.
A.have missed; missed
B.missed; missed
C.had missed; have missed
D.will miss; have missed
ABO反定型