操作系统向用户提供了三种类型界面，分别是命令界面、程序界面和 。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30160' and id < 2440225 and id<>'2440225' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30160' and id > 2440225 and id<>'2440225' order by id asc limit 5