A、B、C轴的正方向为在X、Y和Z坐标方向上按左旋螺纹前进的方向。
查看答案
机床坐标点是数控机床上固有的机械原点，该点到机床坐标原点在进给坐标轴方向上的距离可以在机床出厂时设定。
A. 对
B. 错
数控车床坐标系中没有Y坐标轴。
A. 对
B. 错
Still, despite that handicap, you’ve made an _____ Foreign Service officer.
A. admirable
B. administrative
C. architectural
D. atmospheric
The former president has published his ______.
A. memory
B. melody
C. memoirs
D. methods
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