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题目类型:[单选]
[单选] 一次神经冲动,自神经向骨骼肌传递时( )
A
终板膜的通道对Na+和K+均通透
B
递质与肌细胞膜上的M受体结合
C
可被阿托品阻断
D
必须经总和后方才能引起肌肉收缩
E
既可引起肌细胞兴奋,又可使其抑制
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