心动周期中,左心室容积最大的时期是()
A.快速充盈期末
B.缓慢充盈期末
C.心房收缩期末
D.快速射血期末
E.缓慢射血期末
参考答案:C
根据课本内容回答下列问题.
1. Did Tina go to the mountains on vacation?
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2. Where did Nancy go on vacation?
颈外静脉穿刺点在下颌角与锁骨上缘中点()
A.之上1/3处
B.之上1/2处
C.之下1/4处
D.之下1/3
E.平环状软骨处