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【简答题】
For several years, Americans have enjoyed teleshopping—watching TV and buying things by phone. Now teleshopping is starting in Europe. In some 1 countries, people can turn on their TVs and shop for clothes, jewelry, food, toys and many other things. Teleshopping is becoming popular in Sweden. 2 , the biggest Swedish company sells different kinds of things on TV in fifteen European countries, and in one year, it makes $10 million. In France, there are two teleshopping channels, and the French 3 about $ 20 million a year in buying things through those channels. In Germany, until last year teleshopping was only possible on one channel for one hour every day. Then the government allowed more teleshopping. Other channels can 4 for tele business, including the largest American teleshopping company and a 24­hour teleshopping company. German 5 are hoping these will help them sell more things. Some people like teleshopping because it allows them to do their shopping without 6 . With all the traffic problems in cities, going shopping is not an easy thing. But at the same time, other Europeans don't like this new way of buying things. They call 7 “junk on the air”. Many Europeans usually worry about the quality of the things 8 on TV. They think high quality is the most important thing, and they don't believe they can be sure about the quality of the things on TV. The need of high quality means that European teleshopping companies will have to be 9 the American companies. They will have to be more careful about 10 of the things they sell. They will also have to work harder to sell things that the buyers cannot touch or see by themselves.
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举一反三
【单选题】器官是由( )的结构单位。
A.
多种不同组织构成的,具有一定形态和生理功能
B.
某种组织构成的,具有一定形态和共能
C.
几种不同组织构成,具有一定的细胞数量,能行使一定功能
D.
多种不同组织构成的,具有一定形态,组成一定结构
【单选题】器官是由()结构单位。
A.
多种不同组织构成的,具有一定形态和生理功能。
B.
某种组织构成的,具有一定形态和功能。
C.
几种不同组织构成具有一定的细胞数量能行驶一定功能。
D.
D多种不同组织构成的,具有一定形态组成一定结构。
【判断题】组织是由形态结构和生理功能不同的细胞和细胞间质构成的细胞群体。
A.
正确
B.
错误
【判断题】求最小生成树的普里姆(Prim)算法中边上的权可正可负。
A.
正确
B.
错误
【多选题】作为一个基本假设,厂商的目标是:
A.
利润极大化
B.
成本最小化
C.
收益极大化
D.
规模最大化
【判断题】金属材料硬度常用的测定方法为布氏法、洛氏法等,故硬度指标有:布氏硬度(HB)、洛ft硬度(HRA、HRB、HRC)。
A.
正确
B.
错误
【简答题】喷墨打印机根据喷墨技术分为( )和( )所用的墨有分为( )和( )P书154、155页
【单选题】器官是由()结构单位。
A.
多种不同组织构成的,具有一定形态和生理功能。
B.
某种组织构成的,具有一定形态和功能。
C.
几种不同组织构成具有一定的细胞数量能行驶一定功能。
D.
多种不同组织构成的,具有一定形态组成一定结构。
【多选题】金属材料硬度常用的测定方法为布氏法、洛氏法等,故硬度指标有:布氏硬度、洛氏硬度。洛氏硬度指标可以用以下哪些表达( )。
A.
HRA
B.
HRB
C.
HRC
D.
H
E.
HRR
【判断题】常用的洛氏硬度有HRA、HRB、HRC等3种
A.
正确
B.
错误
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