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图示单口网络的等效电感为( )。
·1H
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·3.5H
·4H<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/16337615115950a1efee219854e80b188403fd27d6b39image18.png"
·1H
·2H
·3.5H
·4H<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/16337615115950a1efee219854e80b188403fd27d6b39image18.png"
参考答案
