交流电路中视在功率S、有功功率P、无功功率Q,三者关系()。A.S2=P2+Q2 B 发布时间:2017-07-07 09:53 │ 来源:www.tikuol.com 题型:单项选择题 问题: 交流电路中视在功率S、有功功率P、无功功率Q,三者关系()。A.S2=P2+Q2B.S=P+Q
题型:单项选择题 You can use a larger plastic bottle, ____ is cut off, ____ as a pot to grow flowers in.A.of which the top; with it’s topB.whose top; with its topC.whose top; the top of itD.the top of which; with it’s top 查看答案