求线性有源二端网络内阻时:外加电源法:应将电压源（）处理。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32671' and id < 2598864 and id<>'2598864' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32671' and id > 2598864 and id<>'2598864' order by id asc limit 5