正确答案: A

由终端到信息插座之间的连线系统

题目：建筑物综合布线系统中的工作区子系统是指( )。

解析：解析：工作区子系统是一个从信息插座延伸至终端设备的区域。工作区布线要求相对简单，这样就容易移动、添加和变更设备。该子系统包括水平配线系统的信息插座、连接信息插座和终端设备的跳线以及适配器。工作区的每个信息插座都应该支持电话机、数据终端、计算机及监视器等终端设备。

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学习资料的答案和解析：

[单选题]By using MP3, a 600M-byte music CD can be(70)to 50M bytes or less. It can be streamed(downloaded in chunks)so that you can begin listening to the opening bars while the(71)of the file arrives in the background. And, most important, MP3 music files retain good listening(72)that(73)compression schemes lacked. That(74)of features makes accessing and distributing music on the Web practical for the first time.

compressed

解析：解析：MP3技术，可以将600MB的CD压缩(compressed)为50M或者更小。音乐可以被流式下载，即当文件的一部分(rest)刚下载到后台处理的时候，音乐已经开始播放了。更重要的是，MP3音乐文件仍保持着良好的质量(quality)，而这正是早期的(earlier)压缩力。案所缺乏的。这些特点的结合(combination)使得在网上发布和存取音乐第一次成为可能。

[单选题]An instruction is made up of(41) that specify the function to be performed and operands that represent the data to be operated on. For example, if an instruction is to perform. the operation of(42) two numbers, it must know(43) the two numbers are. The processor's job is to(44) instructions and operands from memory and to perform. each operation. Having done that, it signals(45) to send it next instruction.

operations