如何解释中性点移位现象？
参考答案：
如果三相负载不对称，而且没有中线或者中线阻抗较大，则负载中性点就会出现电压，这时中性点将会偏移。
请写出IE七大手法？
No adults would like to admit that they are weaker than children to solve sticky and puzzling problems.()
A. to solve about
B. solve
C. in solving about
D. in solving
