下面对卡规的描述，正确的是（）
A.卡规是高精度量具
B.卡规是低精度量具
C.卡规使用方便
D.卡规在生产加工中非常实用
参考答案：A, C, D
She has no friends ______ because she is new here. [ ]
A. talk
B. talk with
C. to talk with
D. to talk
一种变形力学图示对应一种加工方式。
