系统运行时的频率是通过系统的（）来控制。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32642' and id < 2595578 and id<>'2595578' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32642' and id > 2595578 and id<>'2595578' order by id asc limit 5