简述宽带IP网络的关键技术。

题型:问答题 简答题

问题:

简述宽带IP网络的关键技术。

考点:电子与通信技术宽带IP网络宽带IP网络题库
题型:问答题 简答题
完形填空(共20小题;每小题1分,满分20分)
阅读下面短文,从短文后各题所给四个选项(A、B、C、D)中选出最佳选项,并在答题卡上将该项涂黑。
Sam’s uncle had an old bird which sat in its cage all day. One day his uncle said, “It is too expensive to   36  that bird. We will get rid of it.” But Sam wanted to   37   the bird.
Sam’s grandfather told him that the bird was once a famous   38   bird. Now   39 people knew it. His grandfather took the bird out, and then quickly took his arms away.  The bird opened its huge   40  and flew into the sky. After a few minutes, it   41  with a small rabbit, cut it open and started to   42  it.
The next morning, Sam asked his uncle out. Sam did   43   his grandfather had done, but the bird   44   to the ground and stood still. Sam’s uncle   45  . Later his grandfather told him that the bird only hunted in late afternoon when light was less   46  . Sam asked his uncle to come out before   47  . This time the bird caught a mouse. His uncle was quiet with   48  , but laughed again, “We can’t eat mice, so this bird is   49  .” And he sold the bird without telling Sam.
Before Sam found the bird was   50  , two angry men arrived in a car. They   51   his uncle and said, the bird couldn’t hunt and they wanted their money back. Sam’s uncle looked   52  and said, “I have spent it. But… don’t worry!” He   53   at Sam, “Sam will show you 54   to make the bird hunt! It’s a great bird, isn’t it, Sam?” Sam opened the door of the car and took out the   55  . It flew away and disappeared forever.
小题1:
A.feedB.buyC.washD.sell
小题2:
A.knowB.findC.keepD.buy
小题3:
A.singingB.sleepingC.eatingD.hunting
小题4:
A.someB.noC.many D.few
小题5:
A.mouthB.wingsC.tailD.eyes
小题6:
A.dealtB.returnedC.metD.parted
小题7:
A.watchB.searchC.eatD.help
小题8:
A.asB.forC.sinceD.after
小题9:
A.fellB.roseC.walkedD.ran
小题10:
A.shoutedB.criedC.laughedD.nodded
小题11:
A.attractiveB.pleasantC.poorD.strong
小题12:
A.bedB.supperC.lunchD.breakfast
小题13:
A.patienceB.surpriseC.joyD.sadness
小题14:
A.harmfulB.strangeC.cheapD.useless
小题15:
A.leavingB.goneC.dyingD.cooked
小题16:
A.shouted atB.smiled atC.looked after D.took after
小题17:
A.impressedB.worriedC.satisfiedD.bored
小题18:
A.wavedB.pointedC.aimedD.jumped
小题19:
A.whatB.whyC.whereD.how
小题20:
A.moneyB.coatC.birdD.everything
题型:问答题 简答题

古代阿拉伯人通过“丝绸之路”在东西方之间传播了

①印度的糖、稻米、棉花等作物②古代中国的伟大发明

③阿拉伯数字和天文、医学知识④伊斯兰教和伊斯兰文化  [ ]

A.①②③

B.②③④

C.①③④

D.①②③④

题型:问答题 简答题

下列哪一项是在演奏炫技中最难把控的:()

A、细节

B、速度

C、力量

D、绝对高度

题型:问答题 简答题

下列叙述中,正确的是( )。

A.内存中存放的是当前正在执行的应用程序和所需的数据

B.内存中存放的是当前暂时不用的程序和数据

C.外存中存放的是当前正在执行的程序和所需的数据

D.内存中只能存放指令

题型:问答题 简答题

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