问题 单项选择题

以下对信息系统集成的叙述,不正确的是______。

A.信息系统集成包括总体策划、设计、开发、实施、服务及保障

B.信息系统集成主要包括设备系统集成和应用系统集成

C.信息系统集成是具有高技术含量的工程过程,要面向用户需求提供全面解决方案

D.信息系统集成工作的核心是商务,技术和管理活动是系统集成项目实施成功的保证

答案

参考答案:D

解析:[分析] 根据《系统集成项目管理工程师教程》(全国计算机专业技术资格考试办公室组编)第3.1小节的内容可知,系统集成是指将计算机软件、硬件、网络通信等技术和产品集成为能够满足用户特定需求的信息系统。包括总体策划、设计、开发、实施、服务及保障。
信息系统集成有以下几个显著特点:
(1)信息系统集成要以满足用户需求为根本出发点。
(2)信息系统集成不只是设备选择和供应,更重要的是,它具有高技术含量的工程过程,要面向用户需求提供全面解决方案,其核心是软件。
(3)系统集成的最终交付物是一个完整的系统而不是一个分立的产品。
(4)系统集成包括技术、管理和商务等各项工作,是一项综合性的系统工程。技术是系统集成工作的核心,管理和商务活动是系统集成项目成功实施的保障。
根据上述内容可知,选项D的说法不正确的,因此应选D。

单项选择题

It is clear that some chemicals can damage the health of animals and humans. (1) , this is not the only problem that (2) be caused by the careless use of chemicals. Chemicals can also (3) the ecological balance of the environment. If the ecological balance is disturbed, the results can be (4) serious.The (5) of DDT illustrates the problem. DDT, a chemical which kills insects, at first seemed to be a perfect answer (6) many problems. It would control insects that caused dangerous diseases, (7) insects that caused billions of dollars of damage to crops every year. Governments permitted and even (8) the use of DDT. Farmers in many countries (9) to spray it on their crops. The (10) results were good. Damage to crops (11) down, and profits went up. However, the chemical had effects which the scientists didn’t see in (12) . First, it also killed insects which were the (13) enemies of the harmful insects and which were therefore beneficial to farmers. Second, and perhaps worse, DDT did not kill (14) harmful insect. A few insects had natural resistance to the chemical. They (15) and reproduced in large numbers. In a few years there were large numbers of insects which were not (16) by DDT, and there were (17) insects which Could act as natural (18) on these new "super-insects". Finally, it became clear that DDT was not solving the insect problem. In fact, it was making the problem worse. It (19) became necessary to find a second (20) for the effects of the first.

第(7)空应选择()

A.as well as

B.as well

C.but

D.also

多项选择题