以下是对单用户数据库系统的描述,请选择错误描述的选项()。A、单用户数据库系统是一种

题型:单项选择题

问题:

以下是对单用户数据库系统的描述,请选择错误描述的选项()。

A、单用户数据库系统是一种早期的最简单的数据库系统

B、在单用户系统中,整个数据库系统,包括应用程序、DBMS、数据,都装在一台计算机之间不能共享数据

C、在单用户系统中,由多个用户共用,不同计算机之间能共享数据

D、单用户数据库系统已经不适用于现在的使用,被逐步淘汰了

考点:计算机网络管理员网络安全知识综合练习网络安全知识综合练习题库
题型:单项选择题

阅读理解。

     Of course,the main difference on the Chinese dinner table is chopsticks instead of knife and

fork,but that's only superficial. Besides,in decent restaurants,you can always ask for a pair of knife

and fork,if you find the chopsticks not helpful enough. The real difference is that in the West,you

have your own plate of food,while in China the dishes are placed on the table and everyone shares.

If you are being treated to a formal dinner and particularly if the host thinks you're in the country for

the first time,he will do the best to give you a taste of many different types of dishes.

     The meal usually begins with a set of at least four cold dishes,to be followed by the main courses

of hot meat and vegetable dishes. Soup then will be served (unless in Guangdong style restaurants) to

be followed by staple food ranging from rice,noodles to dumplings. If you wish to have your rice to

go with other dishes,you should say so in good time,for most of the Chinese choose to have the staple

food at last or have none of them at all.

     Perhaps one of the things that surprises a Western visitor most is that some of the Chinese hosts

like to put food into the plates of their guests. In formal dinners,there are always "public" chopsticks

and spoons for this purpose,but some hosts may use their own chopsticks. This is a sign of genuine

friendship and politeness. It is always polite to eat the food. If you do not eat it,just leave the food in

the plate.

     People in China tend to over-order food,for they will find it embarrassing if all the food is consumed.

When you have had enough,just say so. Or you will always overeat!

1. What's the main difference on dinner table between China and West is ___________.

A. You have your own plate of food in West while in China everyone shares the dishes.

B. On Chinese dinner table,chopsticks replace knife and fork.

C. You're treated to a formal dinner for the first time.

D. The host will do the best to give you a taste of many different types of dishes.

2 .If you have a dinner in a Chinese home,in which order will the food be served in China?

a. a set of four cold dishes.

b. staple food such as rice,noodle or dumplings.

c. the main courses of hot meat and vegetable dishes.

d. serving soup.

A. acbd    

B. cabd  

C. acdb  

D. cadb

3. According to the passage,we can infer that ___________.

A.Chinese think it impolite for guests to leave food in the plate.

B.Chinese think it polite to put food into the plated of the guests with their own chopsticks.

C.People in China tend to over-order food,for they will find it embarrassing if all the food is consumed.

D. Chinese all think it impolite for guests to ask for a pair of knife and fork.

4. The sentence,in passage 2,"you should say so in good time" means ______.

A. you should say so early

B. you should say so happily

C. you'd better say so

D. you should say so kindly.

5. The "public chopsticks and spoons" are used for/to ______.

A. show the politeness to the guests.

B. share the food together

C. show the genuine friendship and politeness

D. put food into the plates of their guests

题型:单项选择题

与贫血无关的维生素是()。

A.维生素D

B.叶酸

C.维生素E

D.维生素B6

E.维生素B12

题型:单项选择题

北京市:朝阳区( )

A.美国:法国

B.太平洋:北冰洋

C.菊花:泡菜

D.加拿大:蒙特利尔

题型:单项选择题

文献信息检索主要有两种方式,一是();二是()。

题型:单项选择题

引起急性肾小球肾炎的常见病因是()

A.甲型肝炎病毒感染

B.乙型肝炎病毒感染

C.葡萄球菌感染

D.β-溶血性链球菌A组12型

E.乙族甲组溶血性链球菌感染

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