什么是内存?什么是外存?什么是CPU?什么是适配器?简述其功能。

题型:问答题 简答题

问题:

什么是内存?什么是外存?什么是CPU?什么是适配器?简述其功能。

考点:计算机组成原理计算机组成原理题库
题型:问答题 简答题

甲、乙两人去商店采购物品,他们所带钱数之比为7:6,结果甲用去50元,乙用去60元,则两人余下的钱数之比为3:2,两人余下的钱数分别为  [ ]

A.140元,120元    

B.60元,40元

C.80元,80元      

D.90元,60元

题型:问答题 简答题

“地球不是我们从父辈那里继承来的,而是我们从后代那儿借来的”,这句话体现的辩证法原理是( )。

A.要用联系和发展的观点分析和处理问题
B.要重视量变.积极促成质变
C.要充分发挥认识对实践的指导作用
D.要坚持矛盾普遍性和特殊性的统一

题型:问答题 简答题

A. concentrated    B. possible     C. revised      D. applications    E. figures    F. connect        G. benefits      H. global       I. associate       J. tops
More than two million people in Europe now have fiber broadband(光纤宽带)direct to their home, suggests a survey. The latest    小题1:  on superfast broadband delivered by fiber to the home (FTTH) show 18% growth over the last survey compiled in late 2008.
The continued growth suggests that the    小题2:   economic decline has not hit plans to build fiber networks. Sweden    小题3:  the list of nations applying the technology, with 10.9% of its broadband customers using fiber. Karel Helsen, president of Europe’s Fiber-To-The-Home Council, said the growth matched predictions that were    小题4:   when the credit crisis started to make itself felt. “The numbers in 2009 are in line with the latest forecasts,” said Mr. Helsen.
By 2013, the FTTH Council expects that 13 million people across 35 European nations will have their broadband delivered by fiber. Such services would start at a speed of 100 megabits per second (mbps), said Mr. Helsen. Around Europe more than 233 projects were underway to lay the fibers that would    小题5:  homes or buildings to the net, said Mr. Helsen. Many of those, he said, were being operated by local governments or smaller net firms. Local governments were interested in FTTH because of the economic and social    小题6:   it brought in its wake, said Mr. Helsen.
The low delay in high-speed fiber networks made    小题7:   new uses of broadband, he said. “No delay is very important,” he said, “specifically if you talk about   小题8:  that are time-dependent such as personal communications, conference calls or video calls where delays cause a lot of trouble.” While early FTTH services were    小题9:   in cities, said Mr. Helsen, many more were reaching out to rural areas for e-health and e-learning projects.
题型:问答题 简答题

下列抽样方法中属于随机抽样调研方法的是( )。

A.判断抽样

B.就便抽样

C.分群随机抽样

D.分层随机抽样

E.配额抽样

题型:问答题 简答题

分子遗传学标记

更多题库