计算机操作系统的主要功能是( )。A.对计算机的所有资源进行控制和管理,为用户使用

题型:单项选择题

问题:

计算机操作系统的主要功能是( )。

A.对计算机的所有资源进行控制和管理,为用户使用计算机提供方便

B.对源程序进行翻译

C.对用户数据文件进行管理

D.对汇编语言程序进行翻译

考点:计算机等级考试B笔试一级B笔试306
题型:单项选择题
已知a、b互为相反数,c、d互为倒数,|m|=2010,则
a+b
m
+cd-|m|
=______.
题型:单项选择题

If your boss asks you to work in Moscow this year, he’d better offer you more money to do so — or even double that depending on where you live now.That’s because Moscow has just been found to be the world’s most expensive city for the second year in a row by Mercer Human Resources Consulting.

Using the cost of living in New York as a base, Mercer determined Moscow is 34.4 percent more expensive including the cost of housing, transportation, food, clothing, household goods and entertainment.

A two-bedroom flat in Moscow now costs $4,000 a month; a CD $24.83, and an international newspaper $6.30, according to Mercer.By comparison, a fast food meal with a hamburger (汉堡包) is a steal at $4.80.

London takes the No.2 place, up from No.5 a year ago, thanks to higher cost of housing and a stronger British pound relative to the dollar.Mercer estimates (估算) London is 26 percent more expensive than New York these days.Following London closely are Seoul and Tokyo, both of which are 22 percent more expensive than New York, while No.5 Hong Kong is 19 percent more costly.

Among North American cities, New York and Los Angeles are the most expensive and are the only two listed in the top 50 of the world’s most expensive cities.But both have fallen since last year’s study — New York came in 15th, down from 10th place, while Los Angeles fell to 42nd from 29th place a year ago.San Francisco came in a distant third at No.54, down 20 places from a year earlier.

Toronto, meanwhile, is Canada’s most expensive city but fell 35 places to take 82nd place worldwide.In Australia, Sydney is the priciest place to live in and No.21 worldwide.

小题1:What do the underlined words “a steal” in Paragraph 3 mean?

A.an act of stealing

B.something delicious

C.something very cheap

D.an act of buying小题2:London has become the second most expensive city because of ______.

A.the high cost of clothing

B.the stronger pound against the dollar

C.its expensive transportation

D.the high prices of fast food meals小题3:Which city is the third most expensive on the list?

A.Tokyo.

B.Hong Kong.

C.Moscow.

D.Sydney.小题4:Which city has dropped most on the list in North America?

A.New York.

B.Los Angeles.

C.San Francisco.

D.Toronto.

题型:单项选择题

事故现场附近站的站长或车站值班员,根据列调指示赶赴事故现场,负责()有关工作。

A、指挥救援

B、调查事故

C、保护事故现场

D、指挥列车

题型:单项选择题

如果合同是以CIF Liner Terms条件成交的,则卖方发运的货物必须采用班轮装运。( )

题型:单项选择题

逮捕犯罪嫌疑人、被告人,一律经过人民检察院批准。()

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