描述200名正常人发汞值资料（偏态分布）的平均水平，宜采用的指标是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='10716' and id < 855830 and id<>'855830' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='10716' and id > 855830 and id<>'855830' order by id asc limit 5