当光纤通信系统突然全部中断通信业务又原因不明时，首先应做 自环检测。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30264' and id < 2448246 and id<>'2448246' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30264' and id > 2448246 and id<>'2448246' order by id asc limit 5