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图示单口网络的功率因素为( )。
·0.8
·0.707
·-0.6
·0.6<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/16337615114989e2dad56c1ac423fa2ed3417e0b086fdimage15.png"
·0.8
·0.707
·-0.6
·0.6<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/16337615114989e2dad56c1ac423fa2ed3417e0b086fdimage15.png"
参考答案
