管理活动的根本职能是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31820' and id < 2543305 and id<>'2543305' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31820' and id > 2543305 and id<>'2543305' order by id asc limit 5