冠心病患者轻度活动时迅速出现心悸、疲劳和呼吸困难，其心功能分级为（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='25688' and id < 2159241 and id<>'2159241' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25688' and id > 2159241 and id<>'2159241' order by id asc limit 5