试题与答案

90°偏切镗刀可以(),特别适合于铸铁工件的精加工。 A.镗通孔 B.镗盲孔 C.铣

题型:多项选择题

题目:

90°偏切镗刀可以(),特别适合于铸铁工件的精加工。

A.镗通孔

B.镗盲孔

C.铣削

D.镗削平面

E.镗削沟槽

F.镗削成形面

答案:

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参考答案:所谓保护接零,就是把电气设备在正常情况下不带电的金属部分于电网的保护零线(保护导体)紧密联结起来。其安全原理是借接零使设备漏电形成单相短路,促使线路上的短路保护元件迅速动作,在规定时间内...

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题型:阅读理解

阅读理解。

     The word advertising refers to any kind of public announcement that brings products and services to

the attention of people. Throughout history, advertising has been an effective way to promote (促进) the

trading and selling of goods. In the Middle Ages, merchants employed "town criers" to read public messages

aloud to promote their goods. When printing was invented in the fifteenth century, pages of advertisements

(ads) could be printed easily and were either hung in public places or put in books.

     By the end of the seventeenth century, when newspapers were beginning to be read by more people,

printed materials became an important way to promote products and services. The London Gazette was the

first newspaper to set aside a place just for advertising. This was so successful that by the end of the century

several companies started businesses for the purpose of making newspaper ads for merchants.

     Advertising spread quickly throughout the eighteenth century. Ad writers were starting to pay more

attention to the design of the ad text. Everything, from clothes to drinks, was promoted with clever methods

such as repetition of the firm's name or product, words organized in eye-catching patterns, the use of pretty

pictures and expressions easy to remember.

     Near the end of the nineteenth century, companies that were devoted to the production of ads came to be

known as "advertising agencies (广告商)." The agencies developed new ways to get people to think of

themselves as members of a group. Throughout the twentieth century, advertising agencies promoted

consumerism (消费主义) as a way of life, spreading the belief that people could be happy only if they bought

the "right" products.

1. What was advertising like in the Middle Ages?

A. Merchants were employed to promote products.

B. Ad messages were shouted out in public places.

C. Product information was included in books.

D. Ad signs were put up in towns.

2. What does the word "This" in Paragraph 2 refer to?

A. Advertising in newspapers.

B. Including pictures in ads.

C. Selling goods in markets.

D. Working with ad agencies.

3. The 18th century advertising was special in its _____.

A. growing spending

B. printing materials

C. advertising companies

D. attractive designs

4. Which of the following might be the best title for the text?

A. The Story of Advertising

B. The Value of Advertising Designs

C. The Role of Newspaper Advertising

D. The Development of Printing for Advertising

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