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【单选题】
以下关于网络按照覆盖范围进行分类的描述中,错误的是 ____________A.
按覆盖的地理范围，计算机网络可以分为个域网、局域网、城域网和广域网
B.
局域网通过点对点数据链路协议将有限范围内的计算机互联起来
C.
城域网要满足几十千米范围内的大量企业、机关、公司的多个局域网互联的需求
D.
广域网覆盖的地理范围从几十千米到几千千米
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举一反三
【简答题】Mr. Smith ____(write) a book about China last year. 答案是:wrote
【单选题】Mr. Smith required that each of his students a composition every week.
A.
writing
B.
to write
C.
write
D.
wrote
【简答题】Mr.Smith works in an office. He’s very busy 小题1: .Every evening, when he comes back from his office, he’s always tired and wants to go to bed early. 小题2: .She doesn’t stop talking until she falls asle...
【简答题】简述中西建筑艺术总体特征的差异。
【单选题】Mr. Smith ___a book about China last year but I don't know whether he has finished it.
A.
has written
B.
wrote
C.
had written
D.
was writing
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