Pettenkofer反应呈阳性的化合物是( )
A.鞣质 B.胆汁酸 C.蛋白质 D.洋地黄毒苷 E.强心甾烯硫酸酯类
参考答案:B
解析:[知识点] 胆汁酸的鉴别
对正常人体叩诊时可出现哪些叩诊音?各出现在什么部位?
The plant products have been carefully inspected and are considered to be ( ) from any quarantine pests.
A.out B.away C.free D.far