系统抖动是指( )。A.使用机器时,屏幕闪烁的现象 B.系统盘有问题时,致使系统

题型:单项选择题

问题:

系统抖动是指( )。

A.使用机器时,屏幕闪烁的现象

B.系统盘有问题时,致使系统不稳定的现象

C.被调出的页面又立刻被调入所形成的频繁调入调出现象

D.由于主存分配不当,偶然造成主存不够的现象

考点:计算机等级考试网络技术计算机三级(网络技术)3
题型:单项选择题
计算:3-2+
16
-(π-1)0+|-
8
9
|
题型:单项选择题

We live in a dangerous world. The figures for crime go up year by year. If you were attacked in the street, would you be able to defend yourself? Not very well probably, especially if someone was pointing a gun at you. We all see a lot of violence of films, but recently some programs on television showed how people can defend themselves without guns. For example, in one film a woman was attacked from behind. She threw the man, who was heavier and stronger than she was, over her head. Then she held him tightly on the ground. How? She knew Judo.

Jiu-jitsu, as judo is sometimes called, means "muscle science" in Japanese. The student of judo needs to learn a lot about the body, its bones and muscles. Judo uses a number of "falls", "holds" and "throws". Someone who does not know judo cannot defend himself against them. If you know judo you can defend yourself against a person who is stronger than you. You had better not practice judo on your friends unless they can fall without hurting themselves! Being strong is one thing, but using the body wisely is another. In judo, you use the other person's body to help you. You "throw" him to the ground and "hold" him there, so that he cannot move. Of course, it takes time and practice, but knowing judo is useful. In a violent world you ought to be able to defend yourself.

小题1:According to passage, in fact "judo" is ______.

A.the same as "Jiu-jitsu"

B.a kind of fighting

C. a kind of muscle science

D.is helpful to a strong man小题2:Why does the writer say the world is dangerous?

A. The number of violence and crime is increasing every year.

B.Because many people carry guns.

C.Because there too many films.

D.Because people are not able to defend themselves.小题3:Which of the following statement is true about the woman in the passage?

A.The woman held the man over her head.

B.The woman was heavier than the man.

C.The woman was able to defend herself.

D.The woman attacked the man from behind.小题4:If a man knows judo, he ______.

A.will be good at muscle science.

B.will be able to avoid being attacked from his back.

C.may defeat any strong person.

D.can help himself by using the other person's body小题5:What's the best title for this short passage?

A.How to defend oneself

B.Violence in films

C.How to practise judo

D.Something about judo

题型:单项选择题

Y型离心泵增加冷却水时,可输送介质温度为()。

A、70℃

B、80℃

C、100℃

D、110℃

题型:单项选择题

()是一种最经济的照明方式,其中一般照明与局部照明对比比例以1:5为好。()常用于要求照度高,或有一定的投光方向,或固定工作点分布较稀疏的场所。

题型:单项选择题

下列关于累进税率的说法中,不正确的有()。

A.累进税率是按征税对象数额的大小,划分为几个等级,各定一个税率递增征税,数额越大税率越高

B.累进税率分为全额累进税率、超额累进税率、差额累进税率、超率累进税率

C.我国现行的个人所得税采用的是全额累进税率

D.我国现行的土地增值税采用的是超额累进税率

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