问题
问答题 简答题
试比较局部电位和动作电位的不同。
答案
参考答案：局部电位是等级性的；可以总和（空间总和与时间总和）；只能以电紧张性扩布，影响范围小；没有不应期。动作电位是"全或无"的；是可传播的；传导是不衰减的；有不应期。
搜题请搜索小程序“爱下问搜题”
试比较局部电位和动作电位的不同。
参考答案：局部电位是等级性的；可以总和（空间总和与时间总和）；只能以电紧张性扩布，影响范围小；没有不应期。动作电位是"全或无"的；是可传播的；传导是不衰减的；有不应期。
Betty and Lingling are talking about the future. “What will our life 1 in the future?” asks Betty. “I don’t know,” says Lingling. “What do you think?” “Well, no one knows, but it’s interesting 2 .” “We will 3 go to school. We 4 our lessons on the Internet. When we have problems(难题), . The teacher will 5 us the answers on the Internet. “Now almost everyone 6 a mobile phone ,but_ 7 twenty years everyone will carry apocket computer.” “A lot of people will live and work under the sea.” “Machines will do lots of 8 _, and so people will have more 9 .” “ We will have some rice, vegetables and fruit for meals every day. We will not get any meat to eat because there will be 10 animals. “ “ Oh , our way of life in the future will change a lot.”
|