試題1

程序設(shè)計(jì)語(yǔ)言中 （ ） 。
A、while循環(huán)語(yǔ)句的執(zhí)行效率比do-while循環(huán)語(yǔ)句的執(zhí)行效率高
B、while循環(huán)語(yǔ)句的循環(huán)體執(zhí)行次數(shù)比循環(huán)條件的判斷次數(shù)多1，而do-while語(yǔ)句的循環(huán)體執(zhí)行次數(shù)比循環(huán)條件的判斷次數(shù)少1
C、while語(yǔ)句的循環(huán)體執(zhí)行次數(shù)比循環(huán)條件的判斷次數(shù)少1，而do-while語(yǔ)句的循環(huán)體執(zhí)行次數(shù)比循環(huán)條件的判斷次數(shù)多1
D、while語(yǔ)句的循環(huán)體執(zhí)行次數(shù)比循環(huán)條件的判斷次數(shù)少1，而do-while語(yǔ)句的循環(huán)體執(zhí)行次數(shù)等于循環(huán)條件的判斷次數(shù)

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試題2

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試題3

一個(gè)文法G=(N，T，P，S)，其中N是非終結(jié)符號(hào)的集合，T是終結(jié)符號(hào)的集合，P是產(chǎn)生式集合，S是開(kāi)始符號(hào)，令集合V=N∪T，那么G所描述的語(yǔ)言是（ ）的集合。
A、由S推導(dǎo)出的所有符號(hào)串 
B、由S推導(dǎo)出的所有終結(jié)符號(hào)串 
C、V中所有符號(hào)組成的符號(hào)串 
D、V的閉包中的所有符號(hào)串 

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試題4

why have formal documents 
first, writing the decisions down is essential.Only when one writes do the gaps appear and the    (1)    protrude(突出).The act of writing turns out to require hundreds of mini-decisions.and it is the existence of these that distinguishes clear.exact policies from fuzzy ones.
Second.the documents will communicate the decisions to others. The manager will be continually amazed that poliaes he took for common knowledge are totally unknown by some member of his team . Since his fundamentaljob is to keep everybody going in the  (2)directon. his chief daily task will be communication, not decision-making,and his documents will immensely   (3)   this load.
Finally.a manager,s documents give him a data base and checklist. By reviewing them (4)he sees where he is. and he sees what changes of emphasis or shifts in direction are needed.
The task of the manager is to develop a plan and then to realize it. But only the written plan is precise and communicable. Such a plan consists of documents on what.when. how much.where.and who.This small set of critical documents  (5)  much of the manager.s   work.if their comprehensive and critical nature is recognized in the beginning. the manager can approach them as friendly tools rather than annoying busywork. He will set his direction much more crisply and quickly by doing so.
（1）A.inconsistencies
B.consistencies
C.steadiness
D.adaptability
（2）A.other
B.different
C.another
D.same
（3）A.extend
B.broaden
C.lighten
D.release
（4）A.periodically
B.occasionally
C.infrequently
D.rarely
（5）A.decides
B.encapsulates
C.realizes
D.recognizes

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試題5

對(duì)以下四個(gè)序列用直接插入排序方法由小到大進(jìn)行排序時(shí)，元素比較次數(shù)最少的是  （ ）  。
A、89, 27, 35, 78, 41, 15
B、27, 35, 41, 16, 89, 70
C、15, 27, 46, 40, 64, 85
D、90, 80, 45, 38, 30, 25

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試題6

（1）A、0
B、1
C、2
D、3
（2）A、P(S)、V(S)  和 V(S)
B、P(S)、P(S)  和 V(S)
C、V(S)、P(S)  和 P(S)
D、V(S)、V(S)  和 P(S)

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試題7

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試題8

在關(guān)系代數(shù)運(yùn)算中，關(guān)系S、SP和R如下表所示。若先（1），則可以從S和SP獲得R。其對(duì)應(yīng)的關(guān)系表達(dá)式為（2） 。如下的SQL語(yǔ)句可以查詢銷(xiāo)售總量大于1000 的部門(mén)號(hào)。 Select 部門(mén)名From S
Where 部門(mén)號(hào)in (Select 部門(mén)號(hào)From SP Group by （3）)關(guān)系表S 關(guān)系表SP 關(guān)系表R

（2）
（1）A、對(duì)S進(jìn)行選擇運(yùn)算，再與SP進(jìn)行自然連接運(yùn)算
B、對(duì)S進(jìn)行選擇運(yùn)算，再與SP進(jìn)行自然連接運(yùn)算，最后進(jìn)行投影運(yùn)算
C、對(duì)S和SP進(jìn)行笛卡爾積運(yùn)算，再對(duì)運(yùn)算結(jié)果進(jìn)行投影運(yùn)算
D、分別對(duì)S和SP進(jìn)行投影運(yùn)算，再對(duì)運(yùn)算結(jié)果進(jìn)行笛卡爾積運(yùn)算
（2）A. A
B. B
C. C
D. D
（3）A、部門(mén)號(hào) where sum( 銷(xiāo)售量)>1000
B、部門(mén)號(hào) having sum( 銷(xiāo)售量)>1000
C、商品號(hào) where sum( 銷(xiāo)售量)>1000
D、商品號(hào) having sum( 銷(xiāo)售量)>1000

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試題9

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試題10

在YUV彩色空間中對(duì)YUV分量進(jìn)行數(shù)字化，對(duì)應(yīng)的數(shù)字化位數(shù)通常采用Y:U:V=（ ）。
A、8:4:2 
B、8:4:4 
C、8:8:4 
D、4:8:8 

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