问题 单项选择题

关于交换机的功能说法错误的是()。

A、能经济地将网络分成小的冲突网域

B、为每个工作站提供更高的带宽

C、需作高层的硬件升级

D、简化了网络节点的增加操作

答案

参考答案:C

单项选择题
写作题
书面表达 。
     你的朋友李华打算暑假去澳大利亚旅游两周。请你根据下面信息给她写一封信,
向她推荐一本书,并简要介绍书中相关内容, 希望能够帮助她更好地了解澳大利亚。
书名Frommer's Australia 2009
作者Lee Mylne
出版时间2008.11
内容a multi-cultural society sports: surfing, swimming, cycling and
so on unique animal: kangaroo sightseeing spot: the Great Barrier
Reef and Ayers Rock
价格原价: 100元 网上折扣::60元
     注意:1. 开头和结尾已为你写好。
               2. 字数:120字左右。
Dear Li Hua,
     How are you going?
      I'm very delighted to hear that you are going to have a journey to Australia in the coming Summer Vacation. I have
read a good book about it and I want to recommend it to you.
______________________________________________________________________________________________
_______________________________________________________________________________________________
     Have a good journey!
                                                                                                                                                         Yours,
                                                                                                                                                        Li Ming