按照进程就绪的先后顺序调度进程的调度算法是 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29840' and id < 2421806 and id<>'2421806' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29840' and id > 2421806 and id<>'2421806' order by id asc limit 5