单项选择题Whether a north-south axis, the feature of traditional spatial pattern, was built in Yecheng of the state of Wei?
单项选择题下列头孢菌素药物中,t1 2最长的药物是 A. 头孢克洛 B. 头孢孟多 C. 头孢曲松 D. 头孢氨苄 E. 头孢哌酮