以下哪种类型结核病在小儿中最常见()
A.原发型肺结核
B.粟粒型肺结核
C.结核性脑膜炎
D.结核性胸膜炎
E.继发性肺结核
参考答案:A
To keep the air clean, this hospital _____ all the patients ____ in and around it.
A.allows; smoking
B.forbids; to smoke
C.prevents; smoke
D.prohibits; smoke
在导入期,由于产品新颖,又无竞争,从而可以获得高额利润。