对于一个单CPU系统，允许若干进程同时执行，轮流占用CPU，称它们为 的。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30160' and id < 2440235 and id<>'2440235' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30160' and id > 2440235 and id<>'2440235' order by id asc limit 5