下列关于二尖瓣关闭不全的体征的描述，错误的是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='28367' and id < 2319476 and id<>'2319476' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28367' and id > 2319476 and id<>'2319476' order by id asc limit 5