如果测得某种物质的肾清除率为70ml/min,则说明 该物质必定（      ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25944' and id < 2179858 and id<>'2179858' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25944' and id > 2179858 and id<>'2179858' order by id asc limit 5