A-A+ An electric current acts in that very way that 2022-08-12 10:13:02 问答库 阅读 195 次 问题详情 An electric current acts in that very way,that is to say,it takes time to start,and once started,it takes time to stop. 参考答案 电流就是以这样的方式运动，即：它需要时间起动，而一旦起动了，则需要时间停止。
