最优化原则是指在选择过程中 诊疗方案以最小的代价、获取 最大效果，具体要求是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26158' and id < 2192397 and id<>'2192397' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26158' and id > 2192397 and id<>'2192397' order by id asc limit 5