变电站计算机监控系统每个测控单元的（ ）等都独立于其他测控单元。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29474' and id < 2398456 and id<>'2398456' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29474' and id > 2398456 and id<>'2398456' order by id asc limit 5