只要是有源二端网络就一定存在戴维宁等效电路.（）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32671' and id < 2598896 and id<>'2598896' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32671' and id > 2598896 and id<>'2598896' order by id asc limit 5