用于检验混凝土强度的试件应在（ ）随机抽取。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26167' and id < 2192777 and id<>'2192777' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26167' and id > 2192777 and id<>'2192777' order by id asc limit 5