对误码率进行观察测试时，测试时间不得少于 。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30264' and id < 2448240 and id<>'2448240' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30264' and id > 2448240 and id<>'2448240' order by id asc limit 5