静息电位产生的离子基础是
A.K+B.Na+C.Ca2+D.Cl-E.H+
参考答案:A
I spent all my life ______about the history of China and finally I ______ such an honor. [ ]
A. study, receive
B. to study, received
C. studying, received
D. studied, receiving
以下除哪项外都是稳定型心绞痛缓解期非药物治疗()
A.禁绝烟酒
B.卧床休息
C.不宜过饱
D.减轻精神负担
E.适当的体力活动