将模拟的声音波形数字化包括采样和量化两个方面。采样频率是将模拟声波转换为数字时,每秒

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问题:

将模拟的声音波形数字化包括采样和量化两个方面。采样频率是将模拟声波转换为数字时,每秒抽取声波幅度样本的次数。以下哪个采样频率足以还原为人们所能听到的任何声音频率?

A.44.1kHz

B.22.05kHz

C.11.025kHz

D.22.5kHz

考点:计算机等级考试PC技术计算机三级(PC技术)45
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全口义齿装盒完成后,待石膏完全凝固后,为了使蜡型受热变软,将型盒浸入80℃以上的热水中浸泡()

A.1~5分钟

B.5~8分钟

C.10~15分钟

D.15~20分钟

E.20~25分钟

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(16分) 阅读下列材料,回答问题。

作为关系国计民生的重要原料,PX(对二甲苯)产品在经济、社会、军事等领域发挥了举足轻重的作用, 但从几年前的厦门PX项目迁址事件,到大连、宁波、成都、昆明陆续叫停PX项目建设,再到茂名的PX风波……,一时间,PX项目所到之处给人产生“人人喊打”的印象。从现在看,已发事件基本是所有方面都没有按规定在做事。首先政府没有把事说明白,然后出现了反对意见,反对者没有很好表达意见的渠道,政府可能也意识到了,但没有主动去征求意见,而是强推项目;老百姓觉得来信来访等依法手段效果不好,就不约而同“集体散步”,从形式上,老百姓也没有按规矩办;接下来局面失控,政府来维护稳定,再加表态“项目不干了”、 “在未达成广泛共识之前,绝不办理”。几乎所有的事件都是这个结局。

(1)PX这一纳入国家“十二五”规划的重大项目多地屡遭民意“阻击”。 面对“民意”与“官意”对立的局面,政府怎样才能作出正确的判断和决策?(10分)

(2) “救助有门,投诉有道”。假如在PX项目实施过程中你的合法权益受到损害,你将如何正确 * * ?(6分)

题型:单项选择题

When Harvard was founded in 1636, there were no other colleges in the American colonies, and it would become the model for many of those that followed. When it began requiring applicants to take a test known as the SAT in 1935, Harvard started another trend. Two years ago, after it announced an aggressive new financial-aid policy, it helped push social class to the center of the national debate over higher education and forced two of its main competitors, Stanford and Yale, to follow its lead.

Last week. Harvard began to make another effort to affect higher education in its image, its president, Derek Bok, announced that the college would abandon its early admissions program, which for decades has allowed high school seniors to apply in October and get an answer yes, no or maybe – in December, shortly before the regular deadline for applications.

Harvard officials argue that the program is beneficial to rich students who don't need to compare financial-aid offers from various colleges. After the announcement, many people within education urged other colleges to take a similar step.

"We're thrilled," said Laurie Kobick, a college counselor (顾问) at Thomas Jefferson High School for Science and Technology in Alexandria, Va. "I think it's going to make admissions better in so many different ways. It will indeed go a small way toward leveling the field among applicants. Of course, it will also have an effect on colleges, and the biggest winner will almost certainly be Harvard. a fact that may prevent many other colleges – perhaps all of them – from       following Hazard this time. Because any college that does so will risk losing some of its best applicants."

小题1:From the first paragraph we can learn that Harvard ____.

A.was the first college in the American colonies

B.was best known for the SAT

C.was muck better than Stanford and Yale

D.refused to offer financial-aid to applicants小题2:By abandoning early admissions program, Harvard wants ____.

A.to attract the public's attention

B.to influence higher education in its own way

C.to save money spent in attracting students

D.to allow its competitors to admit more students小题3:Early admissions program is good for rich students because ____.

A.they have more chances to enter college

B.they can enter college with a lower score

C.they have special right to be admitted into college

D.they have no problem in supporting their studies小题4:Why does Laurie Kobick think other colleges may not follow Harvard?

A.Because they think the action will harm high education.

B.Because they are afraid that the action is not practical.

C.Because they may attract fewer top students than he[ore,

D.Because they are afraid the action will damage their reputation.

题型:单项选择题

道路新型操作法的具体内容是什么?

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总政治部印发《关于军队党费收缴.使用和管理的办法》规定,军人工资收入(税后)每月在3000-5000元(含)的按()比例交纳党费。

A.0.5%

B.1%

C.1.5%

D.2%

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