下述哪项是鉴别急、慢性肾损伤最重要的指标(    )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26333' and id < 2202115 and id<>'2202115' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26333' and id > 2202115 and id<>'2202115' order by id asc limit 5