影响气道阻力最主要的因素是:()
A.气道内径
B.气道长度
C.气体密度
D.气流速度
参考答案:A
以下疾病与胸膜间皮瘤相关的是()
A.硅沉着病(原称矽肺)
B.结节病
C.石棉沉着病
D.结核病
E.支气管癌
I have already seen that interesting film. _____.
A.So does he
B.So has he
C.So he does
D.So he has