試題1

（ ）在其最好情況下的算法時(shí)間復(fù)雜度為O(n)。
A、插入排序
B、歸并排序
C、快速排序
D、堆排序

查看答案

試題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 (極大痛苦) 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

查看答案

試題3

從下表關(guān)于操作系統(tǒng)存儲(chǔ)管理方案 1、方案 2 和方案 3 的相關(guān)描述可以看出，它們分別對(duì)應(yīng) （ ）存儲(chǔ)管理方案。

A、固定分區(qū)、請(qǐng)求分頁和覆蓋
B、覆蓋、請(qǐng)求分頁和固定分區(qū)
C、固定分區(qū)、覆蓋和請(qǐng)求分頁
D、請(qǐng)求分頁、覆蓋和固定分區(qū)

查看答案

試題4

在屏蔽軟件錯(cuò)誤的容錯(cuò)系統(tǒng)中，冗余附加技術(shù)的構(gòu)成不包括（）。
A．關(guān)鍵程序和數(shù)據(jù)的冗余存儲(chǔ)及調(diào)用
B．冗余備份程序的存儲(chǔ)及調(diào)用
C．實(shí)現(xiàn)錯(cuò)誤檢測(cè)和錯(cuò)誤恢復(fù)的程序
D．實(shí)現(xiàn)容錯(cuò)軟件所需的固化程序

查看答案

試題5

查看答案

試題6

以下關(guān)于封裝在軟件復(fù)用中所充當(dāng)?shù)慕巧臄⑹鲋校_的是（）。
A．封裝使得其他開發(fā)人員不需要知道一個(gè)軟件組件內(nèi)部如何工作
B．封裝使得軟件組件更有效地工作
C．封裝使得軟件開發(fā)人員不需要編制開發(fā)文檔
D．封裝使得軟件組件開發(fā)更加容易

查看答案

試題7

已知某二叉樹的中序序列為CBDAEFI、先序序列為ABCDEFI，則該二叉樹的高度為 （ ） 。
A、2
B、3
C、4
D、5

查看答案

試題8

以下關(guān)于面向?qū)ο蠓椒ㄖ欣^承的敘述中，錯(cuò)誤的是 （ ）  。
A、繼承是父類和子類之間共享數(shù)據(jù)和方法的機(jī)制
B、繼承定義了一種類與類之間的關(guān)系
C、繼承關(guān)系中的子類將擁有父類的全部屬性和方法
D、繼承僅僅允許單重繼承，即不允許一個(gè)子類有多個(gè)父類

查看答案

試題9

查看答案

試題10

查看答案