由给定二端口的K参数确定的等效电路为（）形电路。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32636' and id < 2595073 and id<>'2595073' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32636' and id > 2595073 and id<>'2595073' order by id asc limit 5