案卷封面标注的保管期限分为永久、长期、短期三种期限，其中短期是指工程档案保存（）年以下。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24806' and id < 2121176 and id<>'2121176' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24806' and id > 2121176 and id<>'2121176' order by id asc limit 5