无源二端口网络的Z参数仅与网络元件参数有关，与网络内部结构无关。（）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32678' and id < 2599516 and id<>'2599516' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32678' and id > 2599516 and id<>'2599516' order by id asc limit 5