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2 资源子网和通信子网 1 . 从 _____ 功能上可以把计算机网络分为两个子网: ________ 和 _______ 。 1 ) 资源子网 资源子网提 ________ 和 ________ 的能力,由 ________ 、 _________ 、和 __________ 组成。 2 ) 通信子网 通信子网是计算机网络中负责 _________ 的部分,主要完成数据的 ______ 、 _______ 以及 _______ 。它由网络节点、通信链路组成。 2. 通信子网有两种类型 1_________ :为公共用户提供服务并共享其通信资源的通信子网。例如 _______________(CHINANET) 。 2_________ :专门为特定的一组用户构建的通信子网
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【多选题】Why is the student interested in the professor's class?
A.
He wants to learn about his family background.
B.
He already has the language skills needed for the class.
C.
The professor has a reputation as an expert on Poland.
D.
The course is related to the student's intended course of study.
【简答题】下图中控制电路是如何实现两台电动机的顺序停止的？
【简答题】The student had to do a 1)__________ paper for history.There was a 2)________ book that she needed. She tried the card catalog but it was not 3)__________.Then she was told by the 4)_________ that all...
【单选题】• Don't openly express annoyance at a professor or class. ___5___ When a student attacks a professor on the social media, the language used actually says more about the student. If there is truly a co...
A.
That's what they are for.
B.
Turn to an online instructor for help.
C.
If more information is needed, they will ask.
D.
Remember that online professors get a lot of emails.
E.
Below are some common do's and don' ts for online learners.
F.
Everyone has taken a not-so-great class at one time or another.
G.
Ask questions, but make sure they are good, thoughtful questions.
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