第10题: [单项选择]决定和影响心肌传导性的因素是 A. 部分去极化 B. 最大复极电位水平 C. 动作电位0期除极的速度和幅度 D. 静息电位水平 参考答案:C 答案解析:[考点] 决定和影响心肌兴奋性和传导性的因素 [解析] 决定并影响心肌兴奋性的主要因素是静息电位水平,若静息电位增大(绝对值增大)其与心肌细胞的阈电位距离增大,不易去极化,引起动作电位的阈刺
第31题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. He might get burned. B. He might get the sack. C. He might be late again. D. He might be very angry. 参考答案:B 答案解析:[听力原文]
W: You don’t look very happy today. What’s the matter
M: Tom is late for work again. It ma