血管紧张素Ⅱ受体至少可分为
A.AT1和AT3两种亚型
B.AT2和AT3两种亚型
C.AT1型受体
D.AT2型受体
E.AT1和AT2两种亚型
参考答案:E
Five people were reported _____ in the accident. [ ]
A. killing
B. to be killed
C. killed
D. to have been killed
联系实际谈谈为什么要进行组织变革?组织变革有那些类型?