能达到一定精密度、准确度和线性的条件下，测试方法使用的高低浓度或量的区间为

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30368' and id < 2454665 and id<>'2454665' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30368' and id > 2454665 and id<>'2454665' order by id asc limit 5