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【简答题】
阅读理解。 What is Bay? The simple answer is that it is a global trading platform where nearly anyone can trade practically anything. People can sell and buy all kinds of products and goods. Including cars, movies and DVDs, sporting goods, travel tickets, musical instruments, clothes and shoes-the list goes on and on. The idea came from Peter Omidyar, who was born in Paris and moved to Washington when he was still a child. At high school, he became very interested in computer programming and after graduating from Tuft University in 1988, he worked for the next few years as a computer engineer. In his free time he started Bay as a kind of hobby, at first offering the service free by word of' mouth. By 1996 there was so much traffic on the website that he had to upgrade (升级) and he began charging a fee to members. Joined by a friend, Peter Skill, and in 1998 by his capable CEO, Meg Whitman, he has never looked back. Even in the great. com crashes of the late 1990s, abay has gone from strength to strength. It is now one of the ten most visited online shopping websites on the Intemet. EBay sells connections, not goods, putting buyer and seller into contact with each other. All you have to do is lake an e-photo, write a description, fill out a sales form and you are in business:the world is your market place. Of course for each item (商品) sold eBay gets a percentage and that is great deal of money. Every day there are more than sixteen million items listed on eBay and eighty percent of the items are sold. 1. We learn from the text that eBay provides people with _____. [     ] A. a way of buying and selling goods B. a website for them to upgrade C. a place to exhibit their own photos D. a chance to buy things at low prices 2. Why did Peter create eBay after graduating from university? [     ] A. For fun. B. To make money. C. For gathering the engineers. D. To fulfill a task of his company. 3. From 'he has never looked back' in Paragraph 2, we learn that Peter _____. [     ] A. did not feel lonely B. was always hopeful C. did not think about the past D. became more and more successful 4. How does eBay make money from its website? [     ] A. By bringing callers together. B. By charging for each sale. C. By listing items online. D. By making e-photos.
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【简答题】按照行车组织方法,自动闭塞分为哪几种?
【单选题】在TSQL中,下面关于变量的操作正确的是( )。
A.
DECLARE @name varchar(8) SET @name='lkl' print '姓名是'+name
B.
DECLARE name varchar(8) SET name='lkl' print '姓名是'+name
C.
print  @@VERSION AS '版本', @@SERVERNAME AS '服务器'
D.
SELECT @@VERSION AS '版本', @@SERVERNAME AS '服务器'
【多选题】按照通过信号机的显示制式可分为哪几种自动闭塞类型?
A.
绿黄显示自动闭塞
B.
三显示自动闭塞
C.
四显示自动闭塞
D.
多显示自动闭塞
【单选题】下列关于卡特尔的说法,错误的是()。
A.
卡特尔是一种公开的串谋协议
B.
卡特尔多出现在寡头市场
C.
卡特尔具有稳定性
D.
卡特尔的存在是为了实现垄断利润
【单选题】关于市场集中度风险的说法,错误的是( )。
A.
它反映的是一个行业内部企业与市场的相互关系
B.
根据竞争与垄断关系的不同,通常分为完全竞争、垄断竞争、寡头垄断和完全垄断
C.
集中度不同,但行业内企业的生存发展条件几乎相同
D.
它是行业内企业间竞争与垄断的关系
【单选题】关于寡头市场,说法错误的是( )
A.
少数几家厂商生产和销售了整个行业的全部产品
B.
厂商相互依存
C.
厂商进入或者退出寡头垄断行业比较困难
D.
农产品市场就是典型的寡头市场
【单选题】企业2X15年生产某亏损产品的贡献毛益为3000元,固定成本为1000元。假定在2X16年其他条件不变,但生产该产品的设备可对外出租,一年的增加收入为( )时,应停产该种产品。
A.
2001元
B.
3100元
C.
1999元
D.
2900元
【多选题】自动闭塞分为哪几种类型( )。
A.
站间自动闭塞
B.
固定自动闭塞
C.
准移动自动闭塞
D.
移动自动闭塞
【单选题】某工业项目年设计能力为生产某种产品3万件,单位产品售价为3000元,总成本费用为7800万元,其中固定成本为3000万元,在不考虑销售税金及附加时,则以产量、生产能力利用率、单位产品变动成本表示的盈亏平衡点分别是( )。
A.
2.14万件,71.33%,1600元
B.
2.14万件,71.33%,2000元
C.
2万件,60%,1600元
D.
2万件,60%,2000元
【多选题】自动闭塞一般是根据运营和技术上的特征进行分类的,若按传递信息特征可分为以下哪几种().
A.
交流计数电码自动闭塞
B.
极频自动闭塞
C.
微电子自动闭塞
D.
移频自动闭塞
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