下列哪项对哮与喘鉴别诊断无意义
A.有无宿根B.喉中有无水鸡声C.哮必兼喘D.喘未必兼哮E.呼吸急促
参考答案:E
— Where are you from?
— I'm from __. [ ]
A. china
B. China
C. Chinese
A.mgtgθ
B.mgsinθ
C.μmg
D.μmg