题目内容
进行心肺复苏时，按压和吹气比例是
2021-10-28
A.15:1
B.30:2
C.15:2
D.30:1
E.30:3
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='26629' and id < 2217882 and id<>'2217882' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26629' and id > 2217882 and id<>'2217882' order by id asc limit 5