下图中的两个Uab是相同的吗？http://assets.uooconline.com/upload/2017/02/08/a23f5160e86caf7b.gif
举一反三
- http://assets.uooconline.com/upload/2017/06/08/22cd7a33a0d7cc66.pnghttp://assets.uooconline.com/upload/2017/06/08/643e66a50a2d30cc.png
- 用结点电压法计算图示中结点电压为（ ）http://assets.uooconline.com/upload/2017/02/08/f689fb9216daaf7a.gif
- http://assets.uooconline.com/upload/2017/05/15/adaef741533e238a.pnghttp://assets.uooconline.com/upload/2017/05/15/fe54c9049b43c631.png
- http://assets.uooconline.com/upload/2017/06/04/72f34aee363c1cce.pnghttp://assets.uooconline.com/upload/2017/06/04/e61684f2b6d4cdaa.png
- http://assets.uooconline.com/upload/2018/02/28/d6f9d5db7d50a318.png