下列属于系统配置工具的功能有（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29472' and id < 2398657 and id<>'2398657' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29472' and id > 2398657 and id<>'2398657' order by id asc limit 5