判断下面的计算过程是否正确: 所以/sqp/img?f=f174fa2a9f283f3304267a9f45671b37.files%2Fimage085.png/sqp/img?f=f174fa2a9f283f3304267a9f45671b37.files%2Fimage086.png/sqp/img?f=f174fa2a9f283f3304267a9f45671b37.files%2Fimage087.png
举一反三
- 设复数满足,,那么 /sqp/img?f=5c9aedf77a60828d5dbfb76b638f8bbb.files%2Fimage013.png/sqp/img?f=5c9aedf77a60828d5dbfb76b638f8bbb.files/image019.png/sqp/img?f=5c9aedf77a60828d5dbfb76b638f8bbb.files%2Fimage020.png/sqp/img?f=5c9aedf77a60828d5dbfb76b638f8bbb.files/image021.png
- 标称值分别为“3μF,60V”、“6μF,100V”的两个电容器,串联后的等效电容和耐压为()。 A: 9μF,60V B: 9μF,160V C: 2μF,90V D: 2μF,100V
- 已知一均匀平面波以β=30rad/m在空气中沿x方向传播,则该平面波的频率为() A: f=7/2π×10^9(Hz) B: f=6/2π×10^9(Hz) C: f=9/2π×10^9(Hz) D: f=3/2π×10^9(Hz)
- 设为正向圆周,为负向圆周,则积分 的值为 /sqp/img?f=082dd162a7e1b0159a2edaf7b9917676.files%2Fimage021.png/sqp/img?f=082dd162a7e1b0159a2edaf7b9917676.files/image022.png/sqp/img?f=082dd162a7e1b0159a2edaf7b9917676.files%2Fimage023.png/sqp/img?f=082dd162a7e1b0159a2edaf7b9917676.files/image024.png/sqp/img?f=082dd162a7e1b0159a2edaf7b9917676.files%2Fimage025.png
- 设,则在点均可微是在 点可微的 /sqp/img?f=399564cbae5b180fa94e94b3faa5fe8f.files%2Fimage003.png/sqp/img?f=399564cbae5b180fa94e94b3faa5fe8f.files/image004.png/sqp/img?f=399564cbae5b180fa94e94b3faa5fe8f.files%2Fimage005.png/sqp/img?f=399564cbae5b180fa94e94b3faa5fe8f.files/image006.png/sqp/img?f=399564cbae5b180fa94e94b3faa5fe8f.files%2Fimage007.png