Here is a recipe _____ Super chicken Sandwich.[ ]
A. at
B. in
C. for
D. on
C
I’m sorry I took your backpack______ .
A．because mistake
B．with mistake
C．by mistake
D．by mistakes
轧件通过箱型孔一段后突然绕其纵轴旋转，断面发生畸形，轧件产生宽而厚的耳子，这种现象称为（）。
A．倒钢
B．扭转
C．折叠
