转炉炼钢对石灰质量有哪些要求?

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问题:

转炉炼钢对石灰质量有哪些要求?

考点:炼钢工转炉炼钢工考试转炉炼钢工考试题库
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B

A new college guide in the United States compares educational requirements in seven subjects. These include math, science, writing and United States history or government. The other subjects are economics, foreign language and literature.

The free online guide is from the American Council of Trustees and Alumni. The council is a nonprofit group that supports liberal arts education.

Its president, Anne Neal, says these areas of knowledge are needed to succeed in a twenty-first century society and an increasingly connected world. Yet she told VOA’s Faiza Elmasry it was surprising how many students can graduate with, in her words, a “thin education.”

Forty-two of the one hundred colleges and universities surveyed received the lowest marks. This meant they required two or fewer of the seven subjects. Five schools received a top grade for requiring six subjects. These were Brooklyn College in New York City, Texas A&M, the University of Texas-Austin, West Point and the University of Arkansas.

Robert Costrell is a professor of education reform and economics at the University of Arkansas. He says many, if not all, of the top American colleges once had a core curriculum —a set of courses required for all students.

But over the years, many have dropped these requirements. Or they have watered them down, Professor Costrell says, into what became known as distribution requirements. This system lets a student choose from a number of different courses to satisfy a requirement.

ROBERT COSTRELL: “And in many cases these courses went too far, I would say, towards the fluffy treatment of serious material, and students could satisfy their requirement by taking such courses.”

Professor Costrell says schools should not only re-examine what they teach. They should also measure what students have learned — for example, through some form of examinations or papers.

A new report this week from the College Board showed that college prices continue to rise. But Anne Neal from the American Council of Trustees and Alumni says higher prices. do not guarantee a better general education. In fact, the group found that the higher the tuition, the more likely that students have to develop their own general education.

The college guide is on the Web at whatwilltheylearn.com. Anne Neal says her group is surveying more colleges. The hope, she says, is to discover what college graduates have really learned, and how ready they are to compete in the global marketplace.

61. Where does the passage probably come from?

A. A scientific fiction.                      B. A research newspaper.  

C. A fashion magazine.                     D. An entertainment newspaper.

62. The American Council of Trustees and Alumni does all the following EXCEPT _________.

A. support liberal arts education

B. concern itself with education in America

C. devote time to helping improve college education

D. make money by helping with college education

63. The words “watered them down” underlined in Paragraph 6 most likely mean “_______.”

A. reduced required courses                 B. improved required courses

C. increased required courses                D. developed required courses

64. In this passage, the new college guide mainly tells its readers that American colleges  should _____.

A. meet the requirements of the new century        B. reduce the number of required courses

C. have different standards on required courses      D. cut down on their tuitions

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137Csγ射线和物质的主要相互作用是()。

A.光电效应

B.弹性散射

C.康普顿效应

D.电子对效应

E.光核反应

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在第二次世界大战期间,德国纳粹和日本军国主义者强行用战俘、妇女、儿童和犹太人做医学试验。这一行为正确的伦理判断是()

A.该研究是为了增进医学对人体的了解

B.该研究是当时战争时期的特殊需要

C.参加试验的医学工作者也是迫于无奈,不得已而为之

D.该行为违背了医学科研的根本目的

E.该行为虽然偏离了医学科研的正确方向,但也为医学研究积累了一定的经验

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入学的第一个季度里,简爱承受了很多苦难,有()。

A.适应新规矩

B.严寒

C.营养严重不足

D.取悦他人

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患者女性,40岁。反复发作晕厥伴呼吸困难,紫绀,晕厥发作似与体位变化有关。其诊断是()

A.法洛四联症

B.梗阻型原发性心肌病

C.短暂性心律失常

D.左房黏液瘤

E.主动脉瓣狭窄

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