试题1

（ ）在其最好情况下的算法时间复杂度为O(n)。
A、插入排序
B、归并排序
C、快速排序
D、堆排序

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试题2

there is nothing in this world constant but inconstancy.-SWIFT
Project after project designs a set of algorithms and then plunges intoconstruction of customer-deliverable software on a schedule that demands delivery of the first thing built.
In most projects, the first system built is (1) usable. It may be too slow, too big , awkward to use, or all three. There is no (2 ) but to start again, smarting but smarter and build a redesigned version in which these problems are solved. The discard and (3) may be done in one lump, or it may be done piece-by-piece. But all large-system experience shows that it will be done. Where a new system concept or new technology is used, one has to build a syste m to throw away, for even the best
planning is not so omniscient (全知的) as to get it fight the first time.
the management question, therefore, is not whether to build a pilot system and throw it away. You will do that. The only question is whether to plan in advance to build a (4).or to promise to deliver the throwaway to customers. Seen this way, the answer is much clearer. Delivering that throwaway to customers buys time, but it does so only at the (5) of agony (极大痛苦) for the user, distraction for the builders while they do the redesign, and a bad..reputation for the product that the best redesign will find hard to live down.
Henceplanto throw one away; you will,anyhow.
The management question, therefore, is not whether to build a pilot system and throw it away. You will do that. The only question is whether to plan in advance to build a throwaway, or to promise to deliver the throwaway to customers. Seen this way, the answer is much clearer. Delivering that throwaway to customers buys time, but it does so only at the cost of agony for the user, distraction for the builders while they do the redesign, and a bad reputation for the product that the best redesign will find hard to live down.
(1)A.almost
B.often
C.usually
D.barely
(2)A.alternative
B.need
C.possibility
D.solution
(3)A.design
B.redesign
C.plan
D.build
(4) A.throwaway
B.system
C.software
D.product
(5) A.worth
B. value
C. cost
D. invaluable

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试题3

从下表关于操作系统存储管理方案 1、方案 2 和方案 3 的相关描述可以看出，它们分别对应 （ ）存储管理方案。

A、固定分区、请求分页和覆盖
B、覆盖、请求分页和固定分区
C、固定分区、覆盖和请求分页
D、请求分页、覆盖和固定分区

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试题4

在屏蔽软件错误的容错系统中，冗余附加技术的构成不包括（）。
A．关键程序和数据的冗余存储及调用
B．冗余备份程序的存储及调用
C．实现错误检测和错误恢复的程序
D．实现容错软件所需的固化程序

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试题5

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试题6

以下关于封装在软件复用中所充当的角色的叙述中，正确的是（）。
A．封装使得其他开发人员不需要知道一个软件组件内部如何工作
B．封装使得软件组件更有效地工作
C．封装使得软件开发人员不需要编制开发文档
D．封装使得软件组件开发更加容易

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试题7

已知某二叉树的中序序列为CBDAEFI、先序序列为ABCDEFI，则该二叉树的高度为 （ ） 。
A、2
B、3
C、4
D、5

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试题8

以下关于面向对象方法中继承的叙述中，错误的是 （ ）  。
A、继承是父类和子类之间共享数据和方法的机制
B、继承定义了一种类与类之间的关系
C、继承关系中的子类将拥有父类的全部属性和方法
D、继承仅仅允许单重继承，即不允许一个子类有多个父类

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试题9

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试题10

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