● One of the greatest features of a home  （74）  is the ability to share one Internetconnection simultaneously over two or more computers.

试卷相关题目

• 1● One of the basic rules of computer security is to change your  （73）  regularly.

  A.name

  B.computer

  C.device

  D.password

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• 2● The  （72）  in e-mail messages has affected almost every computer around the worldand has caused the damage of up to US$1 billion in North Americ

  A.A.illness

  B.virus

  C.weakness

  D.attachment

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• 3● Insufficient  （71）  can cause a processor to work at 50% or even more below itsperformance potential.

  A.mouse

  B.I/O

  C.document

  D.memory

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• 4● WWW服务器与客户机之间采用 （69） 协议进行网页的发送和接收。

  A.HTTP

  B.URL

  C.SMTP

  D.HTML

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• 5● 设有一个关系EMP 职工号,姓名,部门名,工种,工资），若需查询不同部门中担任“钳工”的职工的平均工资，则相应的SELECT语句为：    SELECT部门名，AVG(工资)  AS 平均工资    FROM EMP    GROUP BY  （60）    HAVING  （61）将职工号为“23115”、姓名为“李军”、部门名为“硬件测试部”的元组插入EMP关系中的SQL语句为：Insert  （62）

  A.职工号

  B.姓名

  C.部门名

  D.工种

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• 6● The usual address for a Web site is the  （75）  page address, although you can enterthe address of any page and have that page sent to you.

  A.home

  B.main

  C.host

  D.house

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