数据库管理系统能实现对数据库中数据的查询、插入、修改和删除，这类功能为 ( )。A

发布时间：2017-06-26 05:08 │ 来源：www.tikuol.com

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问题：

数据库管理系统能实现对数据库中数据的查询、插入、修改和删除，这类功能为 ( )。

A．数据定义功能

B．数据管理功能

C．数据操纵功能

D．数据控制功能

考点：计算机等级考试信息管理技术三级信息管理技术笔试18

题型：单项选择题

阅读下面短文，掌握其大意，然后从各小题所给的四个选项中选出最佳选项。

        When you wave (挥手) to a friend, you are using sign language. When you smile at someone, you mean to
be      1    .When you put one finger (手指) in front of your      2   you mean "Be quiet."
        Yet, people in different countries may use different sign languages.
        Once an Englishman was in Italy. He     3    speak little Italian. One day while he was walking in the street,
he felt     4    and went into a restaurant. When the waiter came, the Englishman     5     his mouth, put his
fingers into it and took them out again and moved his lips (嘴唇). In this way, he     6    to say, "Bring me some
thing to eat." But the waiter brought him a lot of things to     7    . First tea, then coffee, then milk, but no food.
The Englishman was     8   that he was not able to tell the waiter he was hungry. He was     9   to leave the
restaurant when another man came in and put his hands on his stomach (肚子). And this sign was     10
enough for the waiter. In a few minutes, the waiter brought him a large plate of bread and meat. At last the
Englishman had his meal in the same way.

( )1. A. nice
( )2. A. eye
( )3. A. can
( )4. A. hungry
( )5. A. washed
( )6. A. dared
( )7. A. eat
( )8. A. happy
( )9. A. quick
( )10. A. good

B. friendly
B. hand
B. be able to
B. tired
B. opened
B. meant
B. drink
B. glad
B. slow
B. bad

C. fine
C. mouth
C. able to
C. sad
C. closed
C. had
C. carry
C. sorry
C. ready
C. bright

D. well
D. arm
D. could
D. worried
D. touched
D. decided
D. play
D. afraid
D. quiet
D. wrong

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题型：单项选择题

两次出使西域，开启西域与中原友好往来的人物是（）

A．张骞

B．班固

C．甘英

D．班超

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跳远训练时，甲、乙两同学在相同条件下各跳10次，统计得到他们的平均成绩都是5.68米，甲的方差为0.3，乙的方差为0.4，那么成绩较为稳定的是（）。（填“甲”或“乙”）

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题型：单项选择题

A.条件（1）充分，但条件（2）不充分.

B.条件（2）充分，但条件（1）不充分.

C.条件（1）和（2）单独都不充分，但条件（1）和条件（2）联合起来充分.

D.条件（1）充分，条件（2）也充分.

E.条件（1）和（2）单独都不充分，条件（1）和条件（2）联合起来也不充分.

（）

（1）

（2）

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题型：单项选择题

家兔的毛，灰（B）对白（b）呈显性，短（E）对长（e）呈显性，控制这两对性状的基因位于两对同源染色体上，现将长毛灰兔和短毛白兔两纯合体杂交，获得子二代（F₂），请回答：

F₂中纯合体类型最多有（）种。

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