管子在弯管机上冷弯过程中，管子纵向出现伤痕的原因可能是（）。

搜题请搜索小程序“爱下问搜题”

问题多项选择题

A.夹紧模滑动

B.压力模安装位置太靠里

C.压力模凹槽边太锐利

D.压力模开度小

答案

参考答案：A, B, C, D

选择题

王安石变法中哪一措施与唐代的“庸”相似

A．青苗法

B．募役法

C．方田均税法

D．保甲法

填空题

根据句意和首字母提示填空。

1. His telephone n_____ is 7396250.

2. What kind of d_____ would you like, strawberry ice cream or apple ice cream?

3. There's o_____ one yuan with me, I can't buy these oranges.

4. We'll have a long vacation! Really? It's g_____!

5. We have many kinds of f_____ and drinks.