凡是夹具,其中一定有().
A.对刀装置
B.分度装置
C.平衡配重块
D.定位元件
参考答案:D
What does she look like?[ ]
A. She is well.
B. She is good.
C. She is tall.
D. She likes her.
热加工纤维组织的形成原因是()造成变形后夹杂物沿变形方向呈流线分布的,从而使其产生各向异性.