()是通过编辑子程序中的变量来改变刀具路径与刀具位置。
A、宏程序
B、主程序
C、子程序
D、系统程序
参考答案:A
—Would you help sweep the floor?
—________. I'd rather water the flowers.[ ]
A. Not particularly
B. Don't mention it
C. Anything but that
D. With pleasure
2048Kb/s电接口,接口码型:()
A、HDB3;
B、NRZ;
C、AMI;
D、CMI。