正确答案: C

host

题目：To access information on the Intemet，a user must first log on to the client computer'S______network．

解析：解析：为了能够访问因特网上的信息，用户必须首先登录到客户机的主机网络上。

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学习资料的答案和解析：

[多选题]●In the following essay, each blank has four choices.Choose the best answer and write down on the answer sheet.Communicating via Email is by far the most common Internet activity.You can (71) with anyone in the world who has an Internet address or Email (72) with a system connection to the Internet.All you need is (73) the Internet and an Email program.Two of the most widely used Email programs are Microsoft's (74) and Netscape's Navigator.A typical Email message has three basic (75) : header, message, and signature.

exchange

communicate

game

No.

user

administrator

grasp

possess

access to

Explorer

Foxmail

Outlook Express

elements

frames

cells

解析：【解析】使用E-mail通信是一种最常用的网络行为，你可以与世界上任何人进行通信，只要他拥有IP地址或者E-mail帐号，并且它还必须与Internet连接。而你需要的是有权使用因特网和E-mail。两个最广泛使用E-mail的程序是微软的Outlook Express和Netscape的Navigator。一个E-mail消息有3个基本元素是信头、消息内容和签名。

[单选题]●用户界面设计原则中不包括 (56) 。(56)

软件运行时底层软件发现的错误应由底层代码向界面发送错误信息

[单选题]在虚拟存储器中，当程序正在执行时，由( )完成地址映射。

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