短时记忆的信息容量是有限的，为（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29182' and id < 2374254 and id<>'2374254' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29182' and id > 2374254 and id<>'2374254' order by id asc limit 5