【单选题】
新系统逻辑模型的主要描述工具是___
A. IPO表
B. 系统流程图
C. 数据流程图
D. E-R图
查看试卷，进入试卷练习
微信扫一扫，开始刷题
答案
C
解析
暂无解析
相关试题
【单选题】
某管理信息系统根据以往的国民收入数据，用回归方法来预测下一年的国民收入和社会需求量，进而预测不同价格下的利润，再由管理决策者进行判断定价，对于此类数据的加工处理属于___
A. 事务型处理
B. 分析型处理
C. 决策型处理
D. 程序型处理
【单选题】
诺兰模型把信息系统的发展过程归纳为六个阶段。诺兰认为从___开始,信息系统的发展由“计算机时代”进入了“信息时代”。
A. 蔓延阶段
B. 集成阶段
C. 控制阶段
D. 数据管理阶段
【单选题】
最适合应用原型法开发的系统是___
A. 用户需求较难定义的、规模较小的系统
B. 用户需求较明确、规模较大的系统
C. 数据关系较复杂、数据量大的系统
D. 运算关系复杂、运算工作量大的系统
【单选题】
通常情况下，数据被组织成四个层次，这四个层次依次是___
A. 记录、数据项、文件和数据库
B. 记录、文件、数据项和数据库
C. 数据项、记录、文件和数据库
D. 数据项、记录、数据库和文件
【单选题】
国家制定各种法律，例如保密法、专利法、出版法等，以保护信息的态势，之所以要人为地筑起信息的壁垒，是由于信息本身具有___
A. 扩散性
B. 共享性
C. 传输性
D. 转换性
【单选题】
最适合应用原型法开发的系统是___
A. 用户需求较难定义的、规模较小的系统
B. 用户需求较明确、规模较大的系统
C. 数据关系较复杂、数据量大的系统
D. 运算关系复杂、运算工作量大的系统
推荐试题
【单选题】
Doing your homework is a sure way to improve your test scores, and this is especially true _______ it comes to classroom tests.___
A. when
B. since
C. before
D. after
【单选题】
In developing countries people are _______ into overcrowded cities in great numbers.___
A. breaking
B. filling
C. pouring
D. hurrying
【单选题】
There are other problems which I don't propose to ____________ at the moment.___
A. go into
B. go around
C. go for
D. go up
【单选题】
It is quite necessary for a qualified teacher to have good manners and _________ knowledge.___
A. extensive
B. expansive
C. intensive
D. expensive
【单选题】
I'm not sure whether I can gain any profit from the investment, so I can't make a(n) ______ promise to help you.___
A. exact
B. defined
C. definite
D. sure
【单选题】
The sports meet, originally due to be held last Friday, was finally ________ because of the bad weather.___
A. set off
B. broken off
C. worn off
D. called off
【单选题】
It has been revealed that some government leaders _______ their authority and position to get illegal profits for themselves.___
A. employ
B. take
C. abuse
D. overlook
【单选题】
Shelly had prepared carefully for her biology examination so that she could be sure of passing it on her first ________.___
A. intention
B. attempt
C. purpose
D. desire
【单选题】
The store had to _______ a number of clerks because sales were down.___
A. lay out
B. lay off
C. lay aside
D. lay down
【单选题】
All the students in this class passed the English exam ________ the exception of Li Ming.___
A. on
B. in
C. for
D. with
【单选题】
Writing is a slow process, requiring _______ thought, time, and effort.___
A. significant
B. considerable
C. enormous
D. numerous
【单选题】
Lightning is a ______ of electrical current from a cloud to the ground or from one cloud to another.___
A. rush
B. rainbow
C. rack
D. ribbon
【单选题】
I caught a ________ of the taxi before it disappeared around the corner of the street.___
A. vision
B. glimpse
C. look
D. scene
【单选题】
Students or teachers can participate in excursions to lovely beaches around the island at regular _________.___
A. gaps
B. rate
C. length
D. intervals
【单选题】
Physics is ________ to the science which was called natural philosophy in history.___
A. alike
B. equivalent
C. likely
D. uniform
【单选题】
The new appointment of our president _______ from the very beginning of next semester.___
A. takes effect
B. takes part
C. takes place
D. takes turns
