神经细胞静息电位的形成机制是()
A.K+平衡电位
B.K+外流+Na+内流
C.K+外流+Cl-外流
D.Na+外流+Cl-内流
E.Na+内流+K+内流
参考答案:A
______ he comes, we won't be able to go.[ ]
A. Without
B. Unless
C. Except
D. Even
油层中部深度