以下指标中，不能用来定量评价二尖瓣狭 窄程度的是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31771' and id < 2540103 and id<>'2540103' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31771' and id > 2540103 and id<>'2540103' order by id asc limit 5