地尔硫卓较维拉帕米特有的心脏作用是
A.可防治心绞痛
B.有非竞争性拮抗心肌β受体的作用
C.减慢房室结自律性
D.适用于治疗阵发性室上性心动过速
E.抑制窦房结自律性
参考答案:B
—Thank you very much for giving me a hand when I was in trouble.
—Don’t mention it. I only did what anyone else in my place.
A.must do
B.might do
C.would have done
D.can have done
电流互感器故障有什么现象,怎样处理?