正常成人安静时的通气/血流比值是
A.0.48
B.0.61
C.0.84
D.1.48
E.1.84
参考答案:C
He lost his temper and _____ him for a while. [ ]
A. stared at
B. looked at
C. glared at
D. glanced at
指令M00是模态指令。在程序中执行到M00机床停止,系统复位,固定循环的尺寸数据被清除。