题目内容

翻译下列短文:67. Your password is a 4-digit number you selected when you registered for your library card. It you provided an email address when you signed up for your library card, go to My Account. Enter your library card number. You’ll receive an email with an eight-digit password. It will allow you to log in to your account. You should then reset your password to a 4-digit number.

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强心苷对下列哪种原因引起的慢性心功能不全疗效最好

A. 心肌炎、肺心病
B. 高血压、瓣膜病
C. 甲状腺功能亢进、贫血
D. 严重二尖瓣狭窄、维生素B1缺乏
E. 缩窄性心包炎

强心苷治疗心房颤动的主要机制是

A. 抑制窦房结
B. 缩短心房有效不应期
C. 减慢房室传导
D. 加强浦肯野纤维自律性
E. 延长心房有效不应期

强心苷加强心肌收缩力是通过

A. 阻断心迷走神经
B. 兴奋受体
C. 直接作用于心肌
D. 促进交感神经递质释放
E. 抑制心迷走神经递质释放

强心苷引起心律失常最为常见的是

A. 室上性心动过速
B. 心脏传导阻滞
C. 室性心动过速
D. 窦性心动过缓
E. 室性期前收缩

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