消除速率常速（k)是指

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30364' and id < 2454262 and id<>'2454262' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30364' and id > 2454262 and id<>'2454262' order by id asc limit 5