题目内容
主动脉瓣开放始于（ ）
2021-10-17
A.等容收缩期初
B.快速射血期初
C.等容舒张期初
D.减慢充盈期初
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SQL Error: select id,body,options from ***_enewstiku where sourceid='25935' and id < 2179401 and id<>'2179401' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25935' and id > 2179401 and id<>'2179401' order by id asc limit 5