When the data is transmitted ,it can travel in two ways. In which bits flow through seperate lines simultaneously just like several cars moving together at the same time on a multilane freeway.
【简答题】阅读理解。 Everyone's at it, even my neighbors. I thought I might be the only person left in the world who hadn't done an eBay deal. So, I decided to try my hand at online auction (网上拍卖). Buying for Beginn...