网络经济下,企业垄断市场的方式是: ()A、限产提价 B、依靠产品自身的质量品质 C

题型:单项选择题

问题:

网络经济下,企业垄断市场的方式是: ()

A、限产提价

B、依靠产品自身的质量品质

C、正确的市场策略

D、B和C都对

考点:经济学网络经济概论网络经济概论题库
题型:单项选择题

原来有50本书,再放上8本,书架就放满了。书架上一共可以放多少本书?

题型:单项选择题

When I __1___ a young girl, all I ever wanted to do was travel; and decided that the best way _____2__ this was to become a ___3____ . I’ve been a flight attendant for two years now. It’s a really ___4___ job because I travel all over the world. I ___5____ that the most important requirement was to speak English well, so I studied English at the Hilltop Language School __6___ five years before I become a flight attendant. It was because I could speak English that Igot the job. Thank you, Hilltop Language School!

I want to be a tour guide. In fact, it’s all I have ever wanted to be. I want to travel, __7____ to English- speaking countries____8____ the United States and Australia. However, I know that I have to improve my English, so I’ve started taking lessons at the Hilltop Language School. The Hilltop language School has really helped me __9____ English. I’ve been a student here for a year now, and I really love it. Maybe when I leave I’ll ___10____ becoming an English teacher rather than a tour guide.

小题1:  A. am          B. was         C. is

小题2:  A. to do        B. doing        C. did

小题3:  A. teacher       B. shop assistant  C. flight attendant

小题4:  A. interested     B. interesting    C. interest

小题5:  A. discovered    B. found out     C. found

小题6:  A. for          B. in           C. since

小题7:   A. special       B. specially     C especially

小题8:   A. for example   B. like         C. such as

小题9:  A. learning      B. learn        C. teaching

小题10: A. think over    B. think about   C. thank for

题型:单项选择题

实验来源于生活且服务于生活,请回答些列问题:

(1)正确的实验操作是实验成功的重要因素,下列实验操作错误的是(    )

(2)由图的装置中,干燥烧瓶内盛有某种气体,烧杯和滴定管内盛放某种液体。挤压滴管的胶头,下列与实验事实不相符的是(   )(注:不考虑导管被堵塞)

A.CO2(NaHCO3溶液)/无色喷泉           B.NH3(H2O含酚酞)/红色喷泉

C.H2S(CuSO4溶液)/黑色喷泉              D.HCl(AgNO3溶液)/白色喷泉

(3)设计学生实验要注意安全、无污染、现象明显。根据启普发生器原理,可用底部有 

小孔的试管制简易的气体发生器(见图)。若关闭K,不能使反应停止,可将试管

从烧杯中取出(会有部分气体逸散)。下列气体的制取宜使用该装置的是( )

A.用二氧化锰(粉末)与浓盐酸制氯气

B.用锌粒与稀硫酸制氢气

C.用碳酸钠固体与盐酸制二氧化碳

D.用碳酸钙(块状)与稀硫酸制二氧化碳

(4)为提纯下列物质(括号内为杂质),选用的试剂和分离方法都正确的是

 物质试剂分离方法
硝酸钾(氯化钠)蒸馏水重结晶
二氧化碳(氯化氢)饱和碳酸钠溶液洗气
乙醇(水)生石灰蒸馏
SiO2(Al2O3NaOH溶液过滤
     A.①②         B.①③        C.只有③       D.③④

题型:单项选择题

解放初期,我国政府为了清除外国势力对中国的金融控制,坚决取缔了()和(),禁止一切()在国内流通和买卖,由国家规定合理的牌价收兑外币。

题型:单项选择题

在摆放扫描稿时,沿着扫描平板的边缘摆放,是最佳的扫描摆放位置。

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