细胞接受刺激而兴奋时,膜内电位负值减小称为A.极化 B.去极化 C.超极化 D.反极 发布时间:2018-01-17 17:02 │ 来源:www.tikuol.com 题型:单项选择题 问题: 细胞接受刺激而兴奋时,膜内电位负值减小称为A.极化B.去极化C.超极化D.反极化E.复极化
题型:单项选择题 —_____ are the children doing now?—They are _____ books. [ ] A. What; looking B. Where; reading C. What; reading D. Where ; looking 查看答案