衡量一个测验能否测量出所要测量的特征或品质的指标被称为 （ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29336' and id < 2388560 and id<>'2388560' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29336' and id > 2388560 and id<>'2388560' order by id asc limit 5