A.可重复级B．管理级C．功能级D．成本级软件能力成熟度模型CMM(Capability Maturity M……

单项选择题Artificial intelligence (AI) ,an interdisciplinary field, is usually regarded as a branch of computer science, dealing with models and systems for the performance of functions generally associated with human intelligence, such as(71)and learning.In AI, knowledge-based system is an information(72)system that provides for solving problems in a particular domain or application area by drawing inferences from a knowledge base. Moreover, some knowledge-based systems have learning capabilities. Expert system (ES) indicates the knowledge-based system that provides for solving problems in a particular domain or application area by drawing inferences from a knowledge base developed from human(73). Some expert systems are able to(74)their knowledge base and develop new inference rules based on their experience with previous problems. The term 'expert system' is sometimes used(75)with 'knowledge-based system', but should be taken to emphasize expert knowledge.

单项选择题关系模式R(U，F)，其中U(W，X，Y，Z)，F={WX→Y,W→X,X→Z,Y→W)。关系模式R的候选码是(35)，(36)是无损连接并保持函数依赖的分解。

单项选择题计算机通过电话网拨号方式上网时，异步传输的字符同步，下列选项(18)的说法是正确的；采用数据位为8位的异步起止方式传输数据时，其效率最高为(19)，高级数据链路控制规程(HDLC)是(20)提出的标准；HDLC帧同步标志是(21)；HDLC协议为保证帧同步标志路上传输时的惟一性，对数据进行的处理是(22)字节。

单项选择题请根据图1-13填空。

单项选择题软件测试在软件生命周期中横跨两个阶段，单元测试通常在(1)阶段完成。单元测试主要采用(2)技术，一般由(3)完成。测试一个模块时需要为该模块编写一个驱动模块和若干个(4)。渐增式集成是将单元测试和集成测试合并到一起，(5)集成测试中不必编写驱动模块。

单项选择题若有语句scanf('%d%c%f',&a,&b,&c), 假设输入序列为2223a123o. 12, 则 a. b. c的值为______。

单项选择题以下能正确表示x在－5到－1或5到1范围(含5和1)内，值为“真”的表达式是()A．(x＞＝－5)| |(x＜＝－1)&&a

单项选择题在库存管理中，合理库存量应为正常时的周转库存量和(26)库存量之和。列表法是一种计算周转库存量的简单方法，周转库存量使在进货不足的情况下，仍能保证生产性消费，故其值应为进消费额中的(27)。现有某厂使用钢材在非均衡进消而全年进消相等的条件下，按表16-2预定的日期进货和投料，从该表看出周转库存量为(28)吨。如果误期30天进货，钢材变动如表16-3，从该表可看出，合理库存量应为(29)吨，故该厂(26)库存量为(30)吨。注：表中每月按30天计

单项选择题非均衡进料情况下，k次进料前的累计进料为，其中gi为每次进料量。均衡用料时的累计用料量为Pk=[(tk-T1)×N 365+1]×R N，其中tk为第k次进料时间，T1为第一次用料时间，N为均衡用料次数，R是年总用料量。周转库存量Q应能保证生产正常进行，故Q=max{Pk-Gk)。某厂年需钢400吨，分4次非均衡进料，进料时间和数量如表16-8。分8次均衡用料，第一次用料时时间为第17天。故每次用料量为(55)吨。根据给出的数据和算出的每次用料量，即(55)吨，计算出的进货批次1、2、3和4的进消差额(累计用料与累计进料之差)，在k=1时为100吨，k=2时为(56)吨，k=3时为(57)吨，k=4时为(58)吨，故周转库存量为(59)吨。

单项选择题在企业管理中，管理的关键在于决策。某企业根据调查分析，给出了下面的(1)：假设这三种方案的投资款项分别为扩建100万元，新建200万元，联合经营20万元，企业经营服务期均为10年。三种方案在服务期内的期望收益值分别为：扩建期望收益值为(2)万元；新建期望收益值为120万元；联合经营期望收益值为(3)万元。根据计算结果，可选择(4)。在整个服务期间的这个方案决策被称为(5)。

单项选择题在图7-6所示的树型文件系统中，方框表示目录，圆圈表示文件，“ ”表示路径之间的分隔符，“ ”在路径之首时表示根目录，“..”表示父目录。假设当前目录是D1，“COPY”表示拷贝命令，那么，将文件F2拷贝到根目录中的正确命令是(63)；下面对根目录中文件f1和子目录W1中文件f1描述正确的是(64)。

单项选择题Windows NT为了实现在多种硬件平台上的可移植性，其最关键的部分是(9)，它是(10)。

单项选择题For each blank, choose the best answer from the four choices and write down on the answer sheet.(66) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string.(67) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection.(68) is an approach preferred by cable TV providers. In this solution the fiber terminates at an optoelectrical converter and the final segment is a shared coaxial cable.(69) is a device used to connect two separate network that use different communication protocol.(70) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

单项选择题下列程序的输出结果为()。#include＜iostream.h＞main(){int a=4,b=3,c=1,d;d=a&&b&&am

单项选择题Rapid application development (RAD) systems purport to lighten the developer's(41) by making it easy to program an application with simple intuitive steps.RAD tools(42)the developer everything needed to construct a fully functional application quickly and easily. They make short work of modifying the developed product to(43)changes after the program is finished. Applications developed with RAD tools are constructed as they are envisioned. As an application's real usefulness(44) , the developer armed with RAD tools should be able to(45)on new features with little fuss.