Austin-Flint杂音可发生于下列哪种疾病
A.三尖瓣关闭不全
B.肺动脉瓣狭窄
C.主动脉瓣关闭不全
D.主动脉瓣狭窄
E.肺动脉瓣关闭不全
参考答案:C
No advertisement so far______can have the same effect as this one.
A.made
B.has been made
C.being made
D.to be made
下列药物中哪一味是收敛止血药
A.三七
B.仙鹤草
C.蒲黄
D.槐花
E.地榆