持续性室速无显著血流动力学障碍，药物治疗首选（）
A.西地兰
B.β-受体阻滞剂
C.普罗帕酮
D.利多卡因
E.胺碘酮
参考答案：D
the population of China?[ ]
A. How many are
B. How much is
C. What are
D. What’s
