n个节点的电力系统，其节点导纳矩阵为（）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32641' and id < 2595503 and id<>'2595503' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32641' and id > 2595503 and id<>'2595503' order by id asc limit 5