鉴别二尖瓣关闭不全和二尖瓣脱垂最有意义的体征是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29029' and id < 2363019 and id<>'2363019' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29029' and id > 2363019 and id<>'2363019' order by id asc limit 5