常用的铸铁有:灰铸铁、()、球墨铸铁、蠕墨铸铁等。

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问题:

常用的铸铁有:灰铸铁、()、球墨铸铁、蠕墨铸铁等。

考点:机械工程机械制造机械制造题库
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某信息化施工项目一共要进行30天,预算总成本60万元,其中5万元为管理成本,40万元为物料使用费,其余为人工成本。按照管理计划,每5天进行一次挣值分析以评价项目绩效。在第5天绩效评价时计算得到CPI(绩效评价指数)为0.95,则说明在前5天的施工中,实际成本①预算成本;如果要使下一次绩效评价时CPI为1,且人工、物料使用成本不能改变,以免影响施工质量,则在这两次绩效评价间,每天平均可花费的管理成本为②元。上述①和②依次序应该填写______假设所有成本按照天数平均分配,工程进度不存在延时或提前情况)。

A.①低于②614元
B.①高于②614元
C.①低于②1052元
D.①高于②1052元

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The world’s oldest person, Ms. Baines, died. She celebrated her 115th birthday with congratulations from Barack Obama, President of the United States.  Over her life she lived through the terms of 21 US presidents.

Gertrude Baines passed away(去世) peacefully in her sleep at the Western Convalescent Hospital in Los Angeles, where she had lived for her last ten years. Emma Camanag , the hospital’s leader ,said she was a respectable lady. "It is really an honor for the hospital to take care of her over the last 10 years and we will greatly miss her. It is just like we have lost a relative(亲戚)," said Emma.

Ms. Baines, who was born in Shellman, Georgia, in 1894, had no living relatives. She grew up in the southern US during difficult times. During that time, African American people were required to use separate, often poor, public services. She married young and later divorced (离婚). Her only child, a daughter, was born in 1909 and died of a terrible disease at the age of 18. Ms. Baines worked as a maid (女佣) in Ohio before moving to Los Angeles where she lived on her own until she was well over 100.

She once told an interviewer(记者), "As for the secrets of long life, I do not have any disappointments(失望) in my own life."

She gained some fame when she voted for Mr. Obama in the US presidential election(总统大选), saying she supported him "because he’s for the colored people". It was only the second time in her life she had voted, the first time being for John F. Kennedy.

Ms. Baines became the world’s oldest person in January. Japanese woman, Kama Chien, 114, has now taken over the title.

小题1:It was an honor for the hospital to take care of Ms. Baines because ________.

A.she was a respectable lady

B.she was a relative of the hospital’s leader

C.she lived in the hospital for years

D.she voted for Mr. Obama in the election小题2:Ms. Baines voted for Mr. Obama because he ________.

A.was very popular in the hospital

B.did even better than John F. Kennedy

C.did good things for African Americans

D.congratulated her on her birthday小题3:Which of the following is NOT true according to the passage?

A.Ms. Baines used to serve others in Ohio.

B.Ms. Baines died in a hospital in Los Angeles.

C.Ms. Baines and her husband had only one child.

D.Ms. Baines liked to live alone.小题4:The passage is mainly about ________.

A.the world’s oldest person, Ms. Baines

B.why Ms. Baines voted for Mr. Obama

C.how Ms. Baines lived for so long

D.Ms. Baines and President Obama

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下列对地下铁路的优点表述,不正确的是( )。

A.准点、安全

B.噪声小,无震动,不妨碍城市景观

C.施工方便

D.不侵占地面空间

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简述图形加速卡的工作原理。

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经济学家舒尔茨指出,在解释农业产量的增长差别时,土地的差别是最不重要的,物质资本的质量差别是相当重要的,农民的能力差别是最重要的。对于建设社会主义新农村,发展农业生产,舒尔茨的观点给我们的启示是()

①要千方百计提高农民的文化与科学素质

②耕地保护制度可以暂时放松

③要积极发展农业产业化经营

④要大力推广先进的农业生产工具

A.①②

B.①④

C.②③

D.③④

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