在考虑系统的物理配置方案时，系统的 ________时间是从用户向系统发出一个作业请求开始，经系统处理后，给出应答结果的时间。
完型填空(本大题共 10 小题，每小题 1 分，共 10 分)从选项中选择一个最适合短文的选项，错选、多选或未选均无分。
Jogging is becoming one of the ___21___ growing activities in the nation. More people are starting jog each year. This, however, is a recent occurrence. It was not long ago __22____ joggers were rare sight. Some people thought that they looked quite strange. As __23____ people began jogging the sight of them became more common. There are many reasons ___24___ a person to take up jogging. First, it is a good form of exercise. This is __25____ it involves the use of many parts of the body. The exercising of the heart is of great benefit. This is one of the most important parts of the human body. If the heart does not get the needed exercise, serious problems can occur. ___26___ reason for jogging is for enjoyment. ___27___ being good for people, it can also be very much fun. Part of the fun of jogging comes from the opportunity it provides for meeting other people who enjoy it. One ___28___ that should be considered ___29___ a person takes up jogging as a form of exercise of enjoyment is that it is not for everyone. People should first check 30 their doctors and be prepared to find another form of exercise if jogging is not recommended.
21. A. fastest B. quickest C. most D. best
22. A. when B. while C. that D. as
23. A. many B. those C. more D. the
24. A. of B. with C. for D. in
25. A. that B. why C. reasonable D. because
26. A. A B. Other C. The other D. Another
27. A. Except B. Except for C. Besides D. Regardless of
28. A. matter B. event C. thing D. occurrences
29. A. of B. that C. what D. when
30. A. out B. over C. on D. with
将文本型字段“学号”的“格式”属性设置为@一@@@时，则当输入 E001 时，将会显示 _______。
Eclipse集成开发环境中，每个小程序都是以_____为单位存在的。
收入;岁入 n. r_______________
若随机变量 X～B（4，1/3），则 P{ X≥1} ＝ _________.
设随机变量X～N(0，4)，则E(X2)=_________.
线性表中所含结点的个数称为________。
确定子系统开发优先顺序的一个重要原则是根据子系统的 __________迫切性和潜在效箍高低。
版本控制软件ClearCase涵盖的范围包括版本管理、________、工作空间管理和过程控制。