在(x+y)n的展开式中,若第七项系数最大,则n的值可能为________.

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问题:

在(x+y)n的展开式中,若第七项系数最大,则n的值可能为________.

考点:二项式定理与性质
题型:填空题

火焰光度法的特点有()

A.是一种吸收光谱分析法

B.被推荐为血清(浆)钠、钾测定的参考方法

C.所使用的丙烷等燃气给实验室带来安全隐患

D.具有“电解质排斥效应”

E.精密度高、特异性好、成本低廉

题型:填空题

The iPhone, the iPad, the iPod, each of apple's products sounds cool and has become a pad (一时的风尚). Apple has cleverly taken advantage of the power of the letter “i”,-- and many other brands are following suit. The BBC’s iPlayer —which allows Web users to watch TV programs on the internet—adopted the title in 2008. A lovely bear—popular in the US and UK—that plays music and video is called “iTeddy”.A slimmed-down version of London’s Independent newspaper,was launched last week under the name “i”.

In general,single-letter prefix have been popular since the 1990s,when terms such as e-mail and e-commerce first came into use.

Most “i”products are targeted at young people and considering the major readers of the Independent’s “i”,it’s no surprise that they’ve selected this fashionable name.

But it’s hard to see what’s so special about the letter “i”.Why not use “a”,“b”or “c”instead?According to Tony Thorne,head of Language Center at King’s College,London,“i”works because its meaning has become ambiguous .When Apple uses “i”,no one knows whether it means internet,information,individual or interactive,Thorne told BBC magazines “even when Apple created the iPod,it seems it didn’t have one clear definition,”he says.

“However,thanks to Apple,the term is now associated with portability (轻便), ”adds Thorne.

Clearly the letter “i”also agrees with the idea that the Western World is centered on the individual. Each person believes they have their own needs,and we love personalized products for this reason.

Along with “Google”and “blog”,readers of  BBC magazines voted “i”as one of the top 20 words that have come to define the last decade.

But as history shows,people grow tired of fads. From the 1900s to the 1990s,products with “2000”in their names became fashionable as the year was associated with all things advanced and modern. However,as we entered the new century,the trend inevitably disappeared.

小题1:

We can infer that the Independent’s “i”is aimed at _______.

A.young readers

B.old readers

C.fashionable women

D.engineers小题2:

题型:填空题

简述税法中的实体法要素。

题型:填空题

UNIX系统对主存采用页式虚拟存储管理技术,页面调度使用()算法,以尽量减少()。

题型:填空题

青海各民族的饮食活动作为人际交往的重要手段,是人们融洽感情的良方,体现了一种和谐的人伦文化。

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