一包糖共240块。人数/人平均每人分到的块数/块2468我发现:________

题型:填空题

问题:

一包糖共240块。
人数/人
平均每人分到的块数/块
2
 
4
 
6
 
8
我发现:_____________________________。
考点:除数是一位数的除法
题型:填空题

哮证的主症是()

A.咳嗽胸痛痰脓

B.呼吸急促困难

C.咳吐浊唾涎沫

D.发作性痰鸣喘咳

E.咳嗽潮热盗汗

题型:填空题

最常用的包扎材料不包括什么()

A.绷带

B.三角巾

C.四头巾

D.消毒纸巾

E.就便使用毛巾,手帕等

题型:填空题

数据存储在磁盘上的排列方式会影响I/O服务的总时间。假设每磁道划分成10个物理块,每块存放1个逻辑记录。逻辑记录R1,R2,…,R10存放在同一个磁道上,记录的安排顺序如表1-1所示。

假定磁盘的旋转速度为20ms/周,磁头当前处在R1的开始处。若系统顺序处理这些记录,使用单缓冲区,每个记录处理时间为4ms,则处理这10个记录的最长时间为 (1) ;若对信息存储进行优化分布后,处理10个记录的最少时间为 (2)

2()

A.40ms

B.60ms

C.100ms

D.160ms

题型:填空题

"A good newspaper is a nation talking to itself," mused Arthur Miller in 1961. A decade later, two reporters from the Washington Post wrote a series of articles that brought down President Nixon and the status of print journalism soared. At their best, newspapers hold governments and companies to account. They usually set the news agenda for the rest of the media. But in the rich world newspapers are now an endangered species.
Of all the old media, newspapers have the most to lose from the Internet. Circulation has been falling in the U. S., Western Europe and Latin America for decades. But in the past few years the web has hastened the decline. In his book The Vanishing Newspaper, Philip Meyer calculates that the first quarter of 2043 will be the moment when newsprint dies in the U. S. as the last exhausted reader tosses aside the last crumpled edition.
Newspapers have not yet started to shut down in large numbers, but it is only a matter of time. Over the next few decades half the rich world’s general papers may fold. Jobs are already disappearing. According to the Newspaper Association of America, the number of people employed in the industry fell by 18% between 1990 and 2004.
Having ignored reality for years, newspapers are at last doing something. In order to cut costs, they are already spending less on journalism. Many are also trying to attract younger readers by shifting the mix of their stories towards entertainment, lifestyle and subjects that may seem more relevant to people’s daily lives than international affairs and politics are. They are trying to create new businesses on-and offline. And they are investing in free dally papers. So far, this fit of activity looks unlikely to save many of them. Even if it doest, it bodes ill for the public role of the Fourth Estate.
Nobody should relish the demise of once-great titles. But the decline of newspapers will not be as harmful to society as some fear. Democracy, remember, has already survived the huge television-led decline in circulation since the 1950s. It has survived as readers have shunned papers and papers have shunned what was in stuffier times thought of as serious news. And it will surely survive the decline to come.
The usefulness of the press goes much wider than investigating abuses or even spreading general news; it lies in holding governments to account -- trying them in the court of public opinion. The Internet has expanded this court. Anyone looking for information has never been better equipped. People no longer have to trust a handful of national papers or, worse, their local city paper.
In future, some high-quality journalism will be backed by non-profit organizations. Already, a few respected news organizations sustain themselves that way. An elite group of serious newspapers available everywhere online, independent journalism backed by charities, thousands of fired-up bloggers and well-informed citizen journalists: there is every sign that Arthur Miller’s national conversation will be louder than ever.

The author puts stress on the survival of democracy to show that ______.

A.democracy has great vitality to survive

B.people should not take pleasure in the decline of newspapers

C.the decline of newspapers won’t be so harmful to society

D.democracy might not survive the coming decline of newspapers

题型:填空题

煤的元素分析通常有哪些()。

A.碳、氢、氧、氮、硫、氯

B.碳、氢、氧、氮、氯、氩

C.碳、氢、氧、氮、钙、氯

D.碳、氢、氧、氮、铝、氯

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