同一线路接入的电压等级越高，线路波阻抗(    )。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68479' and id < 4421577 and id<>'4421577' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='68479' and id > 4421577 and id<>'4421577' order by id asc limit 5