下述哪项说明胎盘功能低下（ ）

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='26839' and id < 2231781 and id<>'2231781' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26839' and id > 2231781 and id<>'2231781' order by id asc limit 5