突触前抑制产生是由于突触前膜
A.产生超极化
B.递质耗竭
C.释放抑制性递质
D.兴奋性递质释放减少
E.抑制性中间神经元兴奋
参考答案:D
— What did you have for breakfast during your visit to Britain?
— ______ but bread and butter. That was the only food they served day in and day out.
A.Nothing
B.Everything
C.Anything
D.Something
描述数据通信的基本技术参数是数据传输速率与______。