計算機二級vfp模擬題

1、一、選擇題 （1）數(shù)據(jù)結(jié)構(gòu)作為計算機的一門學(xué)科，主要研究數(shù)據(jù)的邏輯結(jié)構(gòu)、對各種數(shù)據(jù) 結(jié)構(gòu)進(jìn)行的運算，以及 A）數(shù)據(jù)的存儲結(jié)構(gòu)B）計算方法 C）數(shù)據(jù)映象D）邏輯存儲 （2）串的長度是 A）串中不同字符的個數(shù)B ）串中不同字母的個數(shù) C）串中所含字符的個數(shù)且字符個數(shù)大于零D）串中所含字符的個數(shù) （3）在計算機中，算法是指 A）加工方法B）解題方案的準(zhǔn)確而完整的描述 C）排序方法D）查詢方法 （4）以下不屬于對象的基本特點的是 A）分類性B）多態(tài)性 C）繼承性D）封裝性 （5）開發(fā)軟件所需高成本和產(chǎn)品的低質(zhì)量之間有著尖銳的矛盾，這種現(xiàn)象稱做 A）軟件投機B）軟件危機 C）軟件工程D）軟件產(chǎn)生 （6）

2、下面不屬于軟件設(shè)計原則的是 A）抽象B）模塊化 C）自底向上D）信息隱蔽 （7）開發(fā)大型軟件時，產(chǎn)生困難的根本原因是 A）大系統(tǒng)的復(fù)雜性B）人員知識不足 C）客觀世界千變?nèi)f化D）時間緊、任務(wù)重 （8）下列SQL語句中，用于修改表結(jié)構(gòu)的是 A）ALTERB） CREATE C） UPDATED） INSERT （9）數(shù)據(jù)庫、數(shù)據(jù)庫系統(tǒng)和數(shù)據(jù)庫管理系統(tǒng)之間的關(guān)系是 A）數(shù)據(jù)庫包括數(shù)據(jù)庫系統(tǒng)和數(shù)據(jù)庫管理系統(tǒng) B）數(shù)據(jù)庫系統(tǒng)包括數(shù)據(jù)庫和數(shù)據(jù)庫管理系統(tǒng) C）數(shù)據(jù)庫管理系統(tǒng)包括數(shù)據(jù)庫和數(shù)據(jù)庫系統(tǒng) D）3者沒有明顯的包含關(guān)系 （10）關(guān)系模型允許定義3類數(shù)據(jù)約束，下列不屬于數(shù)據(jù)約束的是 A）實體完整性約束

3、B）參照完整性約束 C）域完整性約束 D）用戶自定義的完整性約束 （11）Visual FoxPro 6.0 屬于 A）網(wǎng)狀數(shù)據(jù)庫系統(tǒng) B）層次數(shù)據(jù)庫系統(tǒng) C）關(guān)系數(shù)據(jù)庫系統(tǒng) D）分布式數(shù)據(jù)庫系統(tǒng) （12）下列關(guān)系表達(dá)式中，運算結(jié)果為邏輯真.的是 A) 副教授$ 教授 B) 3+5#2*4 C) 計算機計算機世界 D) 2004/05/01=CTOD(04/01/03) （13）執(zhí)行下列命令后，顯示的結(jié)果是（） X=50 Y=100 Z=X+Y ？ 50+ How many loved your mome nts of glad grace, And loved your beauty wit

4、h love false or true, But one man loved the pilgrim soul in you, And loved the sorrows of your cha nging face; And bending dow n beside the glow ing bars, Murmur, a little sadly, how love fled And paced upon the mountains overhead And hid his face amid a crowd of stars. The furthest dista nee in the

5、 world Is not betwee n life and death But whe n I sta nd in front of you Yet you dont know that I love you. The furthest dista nee in the world Is not whe n I sta nd in front of you Yet you cant see my love But whe n un doubtedly knowing the love from both Yet cannot be together. The furthest dista

6、nee in the world Is not being apart while being in love But whe n I pla inly cannot resist the year ning Yet prete nding you have n ever bee n in my heart. The furthest dista nee in the world Is not struggli ng aga inst the tides But using on es in differe nt heart To dig an un crossable river For t

7、he one who loves you. Whe n you are old and grey and full of sleep, And no ddi ng by the fire, take dow n this book, And slowly read, and dream of the soft look Your eyes had once, and of their shadows deep; How many loved your mome nts of glad grace, And loved your beauty with love false or true, B

8、ut one man loved the pilgrim soul in you, And loved the sorrows of your cha nging face; And bending dow n beside the glow ing bars, Murmur, a little sadly, how love fled And paced upon the mountains overhead And hid his face amid a crowd of stars. The furthest dista nee in the world Is not betwee n

9、life and death But whe n I sta nd in front of you Yet you dont know that I love you. The furthest dista nee in the world Is not whe n I sta nd in front of you Yet you cant see my love But whe n un doubtedly knowing the love from both Yet cannot be together. The furthest dista nee in the world Is not being apart while being in love But whe n I pla inly cannot resist the year ning Yet prete nding you have n ever bee n in my heart. The furthest dis