●在业务领域分析过程中，通过建立实体关系图，把与业务相关的数据模-最需题库

试卷相关题目

1●设某工厂有B1和B2两条流水线生产同一种产品，B1和B2的产量分别占60％和40％，且B1和B2的不合格率分别为1％和2％。现在从该厂的这种产品中随机抽取一件，结果为不合格产品，则该不合格产品是流水线B2所生产的概率为__(61)__。
A.3/5
B.2/5
C.3/7
D.4/7
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2●设集合Z26＝{0，1，…，25}，乘法密码的加密函数为Ek:Z26→Z26，Ek(ik)mod26，密钥k∈Z26－{0}，当密钥k为__(60)__时，加密函数Ek(i)一个单射函数。
A.4
B.5
C.6
D.13
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3●设集合A＝{1，2,3}，下列关系中不是等价关系的为 __(59)__ 。
A.R1={<1,1>,<2,2>,<3,3>}
B.R2={<1,1>,<2,2>,<3,3>,<2,3>,<3,2>}
C.R3={<1,1>,<2,2>,<3,3>,<1,2>}
D.R4={<1,1>,<2,2>,<3,3>,<1,2>,<2,1>,<1,3>,<3,1>,<2,3>,<3,2>}
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4●设X表示由命题变元P1，P2，…，Pn和联接词┐，∧，∨，→，←构成的所有命题公式的集合，则集合X关于运算∧的单位元为__(58)__。
A.P1∧P2∧…∧Pn
B.P1∨P2∨…∨Pn
C.F
D.T
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5●在CORBA体系结构中，负责屏蔽底层网络通信细节的协议是__(53)__。
A.IDL
B.RPC
C.ORB
D.GIOP
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6●多个软件工程师合作开发一个项目，各开发者之间需要两两互相通信。假设每一条通信路径的开销为200LOC/年（LOC为代码行数）。设有四名软件工程师，如果单独工作，每个人的生产率是6000LOC/年，那么由这四名软件工程师组成的项目组的生产率为__(64)__。在这一年期限的最后两个月，又增加了四名工程师，新增成员的个人生产率为3000LOC/年，那么这六人组成的项目组全年完成的开发工作量为__(65)__。
A.28000LOC/年
B.24000LOC/年
C.22800LOC/年
D.21500LOC/年
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7●Developing reliable software on time and within __(66)__ represents a difficult endeavor for many organizations. Usually business solutions have three main aspects : people, __(67)__ , and technology. The main reason for failing software projects has little to do with technology and tools, and much to do with lack of process __(68)__ . Experience has shown that introducing new technology and tools in an immature or undisciplined environment is likely to increase the Chaos.CASE tools are not enough. "A fool with a tool is still a fool!" Structured method was the first wave of the software industry. This was the beginning of transforming software development from a "__(69)__ industry" to mass production. Software process movement is the second wave in the software industry. The process maturity movement prepares the way for the third wave of the software industry: "software industrialization". Software development will become like an assembly and manufacturing process. A critical enabling factor is a disciplined software engineering process with predictable quality, __(70)__ and functionality.
A.forecast
B.preparation
C.budget
D.economy
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8●Prior to the UML, there was no clear leading __(71)__ language. Users had to choose from among many similar modeling languages with minor differences in overall __(72)__ power. Most of the modeling languages shared a set of commonly accepted concepts that are expressed slightly differently in various languages. This lack of __(73)__ discouraged new users from entering the OO market and from doing OO modeling, without greatly expanding the power-of modeling. Users longed for the industry to it adopt one, or a very few, broadly supported modeling languages suitable for __(74)__ usage. Some vendors were discouraged from entering the OO modeling area because of the need to support many similar, but slightly different, modeling languages. In particular, the supply of add-on tools has been depressed because small vendors Cannot afford to support many different formats from many different __(75)__ modeling tools. It is important to the entire OO industry to encourage broadly based tools and vendors, as well as niche products that Cater to the needs of　specialized groups.
A.programming
B.modeling
C.formal
D.intelligent
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