题目内容
关于心动周期的叙述，错误的是
2021-12-16
A.心脏1次收缩和舒张构成1个心动周期
B.心收缩期短于心舒张期
C.有全心舒张期
D.心率加快，心动周期延长
E.无全心收缩期
试卷相关题目
SQL Error: select id,body,options from ***_enewstiku where sourceid='29706' and id < 2412523 and id<>'2412523' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29706' and id > 2412523 and id<>'2412523' order by id asc limit 5