.如果两个节点之间无直接联系，则两个节点互导纳为零，两个节点的互阻抗也为零。(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69495' and id < 4501844 and id<>'4501844' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69495' and id > 4501844 and id<>'4501844' order by id asc limit 5