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【单选题】
关于利多卡因的抗心律失常作用，哪项错误A.
是窄谱抗心律失常药
B.
能缩短普肯耶纤维的动作电位时程和有效不应期
C.
对传导速度的作用，受细胞外液K 浓度的影响
D.
对心肌的直接作用是抑Na 内流，促K 外流
E.
治疗剂量就能降低窦房结的自律性
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举一反三
【单选题】－How often do you eat out? － , but usually once a week. [ ]
A.
Have no idea
B.
It depends
C.
As usual
D.
Centrally speaking
【单选题】— How often do you eat out? — ,but usually once a week. [ ]
A.
Have no idea
B.
It all depends
C.
As usual
D.
Cenerally speaking
【单选题】How often do you eat out? ，but usually once a week．
A.
Have no idea
B.
As usual ‘
C.
It depends
D.
Generally speaking