题型:问答题 简答题 It_____ him one hour______ the exercises yesterday.[ ]A. takes; to do B. took; to do C. takes; doing D. took; doing 查看答案
题型:问答题 简答题 关于胺碘酮的叙述,下列哪一项是错误的()。A.降低窦房结和浦肯野纤维的自律性B.减慢浦肯野纤维和房室结的传导速度C.延长心房和浦肯野纤维的动作电位时程、有效不应期D.阻滞心肌细胞K+通道E.对Na+、Ca2+通道无阻断作用 查看答案