在线切割加工中,当电压表、电流表的表针稳定不动,此时进给速度均匀、平稳,是线切割加工速度和表面粗糙度均好的最佳状态。
参考答案:错
句型转换。
1. Lily is sweeping the floor. (变祈使句)
Please _________ the _________ , Lily.
2. My sister does the dishes every day. (变否定句)
My sister _________ _________ the dishes every day.
3. They go to the movies once a week.(对画线部分提问)
__________ __________do they go to the movies?
4. Mike has good quality clothes. (用最高级)
Mike has __________ ___________quality clothes.
5. This pen is cheap. That pen is cheaper.(连成一句)
That pen is ________ __________this pen.
在现行流行的四种《黄帝内经》版本中,能够较好反应原书面貌的是()。
A、《黄帝内经灵枢集注》
B、《类经》
C、《黄帝内经太素》
D、《黄帝内经素问集注》