心正常的起搏点是（）。
A.窦房结
B.房室结
C.房室束
D.束支
E.浦肯野纤维
参考答案：A
患者症见身常汗出，夜卧尤甚，久而不止，心悸惊惕不安，短气烦倦。治疗应首选
A．生脉散B．牡蛎散C．玉屏风散D．当归六黄汤E．归脾汤
An analyst gathered the following information for a company whose common stock is currently priced at $40 per share:（）
A．26.5
B．1.16
C．25.6
