儿茶酚胺对心肌生物电活动的作用有
A.使慢反应动作电位0期Ca2+内流增快B.加强自律细胞4期自动去极化速度
C.使复极相K+外流减慢D.使快反应动作电位上升速度减慢
上一篇 [A] unpredictable[B] unforgivable[C] unlimited [D] unlikely
下一篇 During the Middle Ages the economic ideas of the Roman Catholic church were express
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