辛味药多用于()。
A.虚证
B.表证
C.湿证
D.喘证
E.气血阻滞证
参考答案:B, E
John can play _____ guitar, but he can't play _____ chess. [ ]
A. the; /
B. /; the
C. the; the
锅炉受热面管子应做通球试验,当弯管的弯曲半径≥3.5Dw时,通球直径不应小于管子公称直径的()。
A.70%
B.80%
C.85%
D.75%