EMI即指(),主要是检查被测设备运行时产生的EMI信号电平。
A.电磁兼容
B.电磁干扰
C.电磁脉冲
D.电磁噪声
参考答案:B
数轴是一条[ ]
A.射线
B.直线
C.线段
D.以上都是
As the busiest woman in Norton, she made ____ her duty to look after all the other people's affairs
in that town. [ ]
A. this
B. that
C. one
D. it