We have a trip Beijing.[ ]
A. in
B. at
C. to
答案:C
久病咳喘,乏力少气,呼多吸少,自汗耳鸣,舌淡脉弱,应诊为()
A.肺气虚证
B.脾肺气虚证
C.肾阳虚证
D.肺肾气虚证
E.肾气不固证
简述乳糖结晶方法。