治疗强心苷所致窦性心动过缓和房室传导阻滞宜选用()
A.奎尼丁
B.阿托品
C.维拉帕米
D.麻黄碱
E.肾上腺素
参考答案:B
Allen wanted to know _____ after it got out of the UFO. [ ]
A. what is the alien doing
B. what the alien would do
C. where would the alien go
D. where the alien is going
流感嗜血杆菌培养时,培养基中需加入X因子和V因子,其中,V因子是一种()。
A.血红素及其衍生物
B.无机盐
C.氨基酸
D.维生素
E.碳水化合物