数控机床加工中所需要的（）都要编人数控程序中。
A.切削要素
B.走刀路线
C.工艺信息
D.加工工艺
参考答案：C
—Which driver was to blame?
—Why,_____!It was the child’s fault,clear and simple.He suddenly came out between two parked cars.
A．both
B．each
C．either
D．neither
慢性胰腺炎CT显示胰腺导管的特征性改变为（）
A.狭窄
B.扩张
C.平行双轨
D.不规则串珠状
E.以上均不是
