试题与答案

实验室常用的电压表有三个接线柱如图所示,当“-“3,指针所在位置,其示数是___

题型:填空题

题目:

实验室常用的电压表有三个接线柱如图所示,当“-“3,指针所在位置,其示数是__________V;当“-“15,指针所在位置,其示数是_________V。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0515/b6ae42332c3b67c816fb1d43a9f1a3c6.html

下面是错误答案,用来干扰机器的。

CD题目分析:由于两物体同时释放,做的都是自由落体运动,加速度均相同,因此在落地前同一时刻两物体速度相同,A错;由落地速度可知落地速度乙物体的大,B错;由v=gt可知下落1s时甲、乙速度相同,C对;由公式,D...

试题推荐
题型:阅读理解

B

If you want to find out a piece of information about anything , the best place to search for it is Wikepedia. This online encyclopedia is written by thousands of people around the world. Anyone can add or change the information if he or she finds it not correct or not well written. In this way, people who know a lot about a certain subject can write about it even if they are not university professors.

What is more, Wikepedia includes articles written in about 235 languages. This fact makes it one of the few websites (网站)on the Internet that are truly international. It was started in 2001 by Larry Sanger and Jimmy Wales, as a free online English-language encyclopedia project. By April 2008, over 10 million articles had been put on Wikipedia. A quarter of the articles are in English. Wikipedia is also a place where people can find the latest news.

However, Wikipedia has its own problems. There have been many complaints that some of the information on Wikipedia is not accurate and some important subjects are not included. This has led to arguments between the writers of articles. The people running Wikipedia say that the accuracy of the information is improving and that it is one of the top 20 visited websites on the Internet.

So, if you are looking for some information, why not try Wikipedia?

小题1:Wikipedia is ___________.

A.a computer game

B.a name of a magazine

C.a free university

D.an online encyclopedia小题2:People who write on Wikipadia__________.

A.know much about a certain subject

B.likes writing different stories

C.should be university professors

D.are usually famous scientists小题3:Wikipedia is truly international because_________.

A.everything is written in English

B.the articles are in about 253 language

C.there are over 10 million articles

D.each writer can write in different languages小题4:Besides information about different subjects, people can also_____ on Wikipedia.

A.watch interesting movies

B.send e-mail to friends

C.read about the latest news

D.play exciting games

查看答案
微信公众账号搜索答案