题型:名词解释 Which of the following statements is true according to what you have heard a. I will eat lunch very quickly. b. I will have lunch before the meeting. c. I will eat lunch at the meeting. d. I will eat lunch while jogging. 查看答案
题型:名词解释 随着Internet的发展,用户对网络带宽的要求不断提高,传统的接入网已成为整个网络中的瓶颈,以新的宽带接入技术取而代之已成为目前研究的焦点。其中最引人注意的是光纤接入技术。什么是PON,请列举影响EPON的关键技术 查看答案