有以下程序 main()int n=0,m=l,x=2;if(!n) x-=1;

题型:填空题

问题:

有以下程序
main()
int n=0,m=l,x=2;
if(!n) x-=1;
if(m) x-=2;
if(x) x-=3;
printf("%d\n",x);

执行后输出的结果是______。

考点:计算机等级考试C语言二级C语言笔试
题型:填空题

下列关于电场线和磁感线的说法不正确的是(  )

A.二者均为假想的线,实际上并不存在

B.实验中常用铁屑来模拟磁感线形状,因此磁感线是真实存在的

C.任意两条磁感线不相交,电场线也是

D.磁感线是闭合曲线,电场线是不闭合的

题型:填空题

第三部分:阅读理解 (共20小题;每小题2分, 满分40分)

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

A

The Kindle is coming! The Kindle is coming!

Amazon. corn will start selling its wireless electronic reader the Kindle in 100 countries, including China and most of Europe, from Monday, 19 October. The Kindle will cost $279 (189) globally. Amazon says 200,000 English-language books as well as over 85 newspapers and magazines will be available on the international device (设备).

The Kindle is popular with travellers who like the convenience of downloads and don't like carrying heavy books. Amazon says that for every 100 customers who buy a book in the US, some 48 now buy it as an e-book.

"Our vision for Kindle is every book ever printed, in print or out of print, in every language, all available within 60 seconds," Amazon chief executive Jeff Bezos told the Irish Times, one of the newspapers that will be available on the device. The international Kindle version will store as many as 1,500 books, read PDF files and allow users to make annotations.

Forrester Research predicts that three million e-reader devices will be sold in the US this year, up from an earlier estimate of two million. That is expected to double next year. The research group says that Amazon will take a 60 per cent market share this year, followed by Sony’s Reader at 35 per cent. In July, Credit Suisse estimated that Amazon's revenues from the Kindle could reach $420 million this year, representing 8.4 per cent of the company's total income.

There are rumours that Amazon's next step will be to turn the Kindle into a device for tasks like e-mailing, texting and surfing the Web, thus competing with a tablet computer reportedly being developed by Apple.

56. The underlined word "revenues" in Paragraph 4 can be replaced ________.

A. users                   B. books                   C. income           D. device

57. Which of the following is true.'?

A. The Kindle can be bought in China now.

B. We can use the Kindle to surf the Internet.

C. The books the Kindle offers are written in 20,000 kinds of languages.

D. This readers are sold in 99 countries of Europe.

58. From this passage we can infer _______.

A. Next year Amazon will sell 6 million readers

B. This year the company's total income reach 5000 million

C. In the US about 48% customers who buy a book use the Kindle

D. You can't deal with the information Amazon provides

59. Which one of the following will like the Kindle most9.

A. Professor.         B. Students.                C. Traveller.          D. Businessmen.

题型:填空题

与同心圆硬化临床不相符的是()

A.患者多为青壮年,急性起病

B.多以沉默寡言、淡漠、反应迟钝、无故发笑、重复语言等精神障碍为首发症状

C.可有偏瘫、眼外肌麻痹、眼球浮动和假性球麻痹等临床表现

D.体征可有轻偏瘫、肌张力增高及病理征等

E.MRI可见脑白质内长T1长T2弥漫性病灶,以枕叶为主,界限分明

题型:填空题

强调双向开放,就必须明确对内开放与对外开放的关系。下列关于对内开放的主要目的说法不正确的是()。

A.充分发政府在资源配置中的主导作用

B.打破地区、行业间的割据状态

C.反对和抑制各种垄断

D.促进竞争机制充分发挥作用

题型:填空题

为了清除焊瘤,宜选用()断面的碳棒。

A、圆形

B、扁形

C、方形

D、三角形

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