单项选择题

A.电压敏感型钠离子通道抑制剂(voltage-dependent Na+channel inhibitor)
B.电压敏感型钾离子通道活化剂(voltage-dependent K+channel activator)
C.休止型钠离子通道抑制剂(resting Na+channel inhibitor)
D.休止型钾离子通道抑制剂(resting K+channel inhibitor)
E.电压敏感型钙离子通道抑制剂(voltage-dependent Ca2+channel inhibitor)