题目内容

因特网中最基本的IP地址分为A、B、C 三类，我国采用C类，它的网络号占用的字节数是

A. 1
B. 2
C. 3
D. 4
E. 5

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WWW向用户提供信息的基本单位是

A. 链接点
B. 文件
C. 页
D. 目录
E. 超媒体文件

计算机最基本的工作原理是

A. 数字编码原理
B. 程序存储原理
C. 程序控制原理
D. 操作系统原理
E. 彩色原理

All the staff members ______ an opportunity to express their opinions about the design of the new factory before construction begins.

A. (A) had
B. (B) would have had
C. (C) have had
D. (D) will have

Without the devotion and cooperation of this great team, I can tell you for sure that the project would never ______ completed last week.

A. (A) be
B. (B) have been
C. (C) been
D. (D) had been