集线器按照结构形式划分,可分为()、()和()三种。
查看答案
信噪比越小,噪声对信号传输质量的影响就越小
A. 对
B. 错
编程求如下二维数组每一行的平均值:grades=[[1],[1,2],[1,2,3],[1,2,3,4,5]]。如果还要求每一行的最大最小值,程序该如何写?
表达式INT(6.26*2)%ROUND(3.14,0)的值是____.
James Joyce was a famous writer from (). (it is a name of a country) The name of the first book writen by James Joyce mentioned in the clip is () The name of the second book mentioned in the clip is ()