单选题
发布日期:2021-04-26
安静时K+比Na+更易透过细胞膜
兴奋时Na+比K+更易透过细胞膜
K+的不断外流和Na+的不断内流
膜两侧无离子交换
膜上Na+-K+依赖式ATP酶的活动
内外,是一个抽象名词。本身就是由一对反义词组成,具有相对性。指内部和外部;里面和外面。
通信中的均衡是指对信道特性的均衡,即接收端的均衡器产生与信道相反的特性,用来抵消信道的时变多径传播特性引起的码间干扰。换句话说,通过均衡器消除信道的频率和时间的选择性。
分布(distribution)是指吸收入血液的药物随血液循环到达机体组织、器官的过程。
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