切削厚度
参考答案：
垂直于主刀刃方向测量的切削层横截面尺寸。
No smoking, please. It’s ____ the rules.
A．against
B．for
C．on
D．at
— Don't you think it necessary that he _______ to Miami but to New York?
— I agree, but the problem is _______he has refused to.[ ]
A. will not be sent; that
B. not be sent; that
C. should not be sent; what
D. should not send; what
