数控车床车削螺纹,影响中径精度的因素有()。
A、轴向对刀精度
B、螺纹刀具安装角度
C、径向对刀精度
D、螺纹刀具角度
E、螺纹刀切削刃后角角度不合理
参考答案:B, C, D
下列哪项不属于远部取穴()
A.胃痛取足三里
B.腰痛取委中
C.腰痛取昆仑
D.发热取大椎
E.头痛取太冲
They didn't buy the car.________,they didn't like its color;________,it was too expensive.
A.For one thing; for another
B.For one thing; but also
C.On the one hand; for another hand
D.For the one hand; on the other hand