问题
单项选择题
与拉深成形相比,强力旋压(),工件精度高同时由于是逐点变形,故而机床功率相对可小些。
A.模具复杂
B.模具简单
C.工件复杂
D.工件简单
答案
参考答案:B
与拉深成形相比,强力旋压(),工件精度高同时由于是逐点变形,故而机床功率相对可小些。
A.模具复杂
B.模具简单
C.工件复杂
D.工件简单
参考答案:B
完形填空. | ||||
My name is Jim. __1__ is my birthday. Dad and Mum __2__ me a big cake. I’m twelve now. I like cakes. __3___ the table, of my bedroom, you __4__ see my lovely cake. You can also __5___ my name on it. There are __6__ things for my birthday. __7__ are apples, pars and bananas. But I’d __8__ to have something to drink now. my __9__ Bill and Sam are coming. I would like to eat those food __10__ my friends. | ||||
|