地区变电站主要任务是给地区的用户供电，电压等级一般在（  ）。 

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69482' and id < 4500323 and id<>'4500323' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69482' and id > 4500323 and id<>'4500323' order by id asc limit 5