试题与答案

一台抽水机功率是10千瓦,用它来抽水灌田,1分钟能将7×104牛的水提到6米的水

题型:填空题

题目:

一台抽水机功率是10千瓦,用它来抽水灌田,1分钟能将7×104牛的水提到6米的水渠里,抽水机所做的功为______,它的机械效率为______.

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0721/7a8a66b0778afba894f8df6bf23da313.html

下面是错误答案,用来干扰机器的。

答案:B

试题推荐
题型:阅读理解

阅读理解。

     Korean culture (韩国文化) is really exciting right now. The Korean Wave is sweeping Asian countries

including China. Young people are going crazy (疯狂的) about Korean TV plays, Korean pop songs, tackwondo and the Korean language.

     The Korean Wave started a few years ago with the TV series Winter Sonata. This love story is still popular.

People, especially' girls, like the beautiful story and good-looking actors (演员) like Bae Yong Jun.

     In the music world Korean girls are making them: selves heard in China. You can often find big Korean

names like Baby Vox, S. E. S and Finkle at the top of the Chinese music charts (排行榜).

     The Korean Wave has also made young people want to try the clothes and hairstyles of pop stars, too. Not

only that. Now some girls in China are having plastic surgery (整容) to change the way they look. People say

some beautiful Korean stars have had plastic surgery. These stars don't make plastic surgery look shameful

(丢面子的).

     Are all the faces of beautiful Korean girls not real? Find out for yourself when you next visit South Korea.

1. The Korean Wave refers to (指) _____.

A. Korean TV plays

B. Korean culture

C. Korean language

D. Korean pop songs

2. _____ is the start of the Korean Wave.

A. Tackwondo

B. Korean music

C. The TV series Winter Sonata

D. Korean clothes

3. From the third paragraph we know _____.

A. many Korean girls often come to China and sing pop songs

B. Korean pop songs are liked by many Chinese people, especially the young

C. girls like good-looking Bae Yang Jun more than Baby Vox, S. E. S and Finkle

D. many Chinese people enjoy the songs sung by Baby Vox, S. E. S and Finkle

4. The underlined sentence in the fourth paragraph means _____.

A. people can't tell which beautiful face is a real one

B. plastic surgery really makes the stars look more beautiful

C. the Korean stars think plastic surgery is a shameful thing

D. people don't think plastic surgery is a shameful thing any longer

5. Which of the following is NOT TRUE according to the passage?

A. Bae Yong Jun is a popular Korean actor in China.

B. Young people like most pop stars' clothes and hairstyles.

C. Now the Korean TV series Winter Sonata is still loved by people.

D. Some Chinese girls are trying to change their faces by having plastic surgery.

查看答案
微信公众账号搜索答案