在确定的分析条件下，测得值与真实值的 接近程度称为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30791' and id < 2479671 and id<>'2479671' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30791' and id > 2479671 and id<>'2479671' order by id asc limit 5