二尖瓣狭窄患者心脏听诊如能听到杂音，该杂音的部位及时期为

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='26456' and id < 2209470 and id<>'2209470' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26456' and id > 2209470 and id<>'2209470' order by id asc limit 5