心室肌动作电位持续时间较长的主要原因在于()。
A.O期去极化缓慢
B.1期复极化缓慢
C.电位变化较小的平台期
D.慢钙通道失活
E.以上都不是
参考答案:C
根据上下文补全对话。
A: Hello! I'm a reporter from the radio station. May I ask you some questions?
B: Sure. 1 is it?
A: Uh-huh, and 2 3 do you read?
B: I read every day at school.
A: How often do you exercise?
B: I exercise about three 4 a week.
A: How often do you 5 ?
B: Shop? I shop about once a week.
A: Well. Thanks a lot.
B: You're welcome.
下列特性穴中,治疗急性病症应首先选用
A.原穴
B.俞穴
C.八会穴
D.八脉交会穴
E.郄穴