反映左、右心房除极过程电位和时间变化的是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='31965' and id < 2554850 and id<>'2554850' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31965' and id > 2554850 and id<>'2554850' order by id asc limit 5