●软件开发项目进度安排常用的图形描述有Gantt（甘特）图和PERT（项目计划评审技术）图。PERT图难以清晰地描述(50)，而Gantt图难以清晰地描述(51)。

(50)

●Software (75)occurs following delivery ofa software product to the customer.

(75)

●A (74)is aformal set ofrules for specifying the format and relationship when exchanging data among communicating devices.

(74)

● (72) is the process ofarranging a group of data elements into some desired order.

(72)

●In general,atypical (71)   model is composed of several phases, such as requirements analysis phase, generaUdetailed design phase, implementation phase, system acceptance testing phase.

(71)

●   (73)testing is the responsibility ofthe programmer, who knows exactly what is going on inside the program.

(73)

●以下关于FTP协议的叙述中，不正确的是(69)。

(69)

●网络中某些用户只能发送但不能接收Email，不可能的原因是(70) 。

(70)

●在浏览器中运行下面的HTML文件，浏览器窗口中的内容会分成(67)行。

中国城市

   北京

   上海

   广州

   西安

兰州

   <／body>

(67)

●在ADO对象中， (68)对象负责连接数据库。

(68)

 ●网桥是一种(66)设备。在现代网络中，用交换机代替了网桥。

(66)