首页
登录
职称英语
Scientists in India have invented a new way to produce electricity. Their in
Scientists in India have invented a new way to produce electricity. Their in
游客
2024-01-17
30
管理
问题
Scientists in India have invented a new way to produce electricity. Their invention does not get its power from oil, coal or other fuels. It produces electricity with the power of animals. India has about eighty million bullocks(小牛). They do all kinds of jobs. They work in the fields. They pull vehicles through the streets. They carry water containers. Indian energy officials have been seeking ways to use less imported oil to provide energy. Scientists at the National Institute for Industrial Engineering in Bombay(孟买)wondered whether the millions of bullocks could help. Many villages in India lack electricity, but they have many bullocks. And often the animals are not working. One job done by bullocks is to pump water out of the well. The animals do this by walking around and around in a circle. As they walk, they turn a heavy stick that makes the pump move. This simple technology is centuries old. Scientists thought that the same technology could be used to produce electricity. Bullocks walk in a circle only two or three times a minute. This is much too slow to produce electricity, but it can create enough power to turn a series of gears(齿轮). A large gear sits next to a smaller gear. As the large gear turns, it causes the smaller gear to turn. That gear turns an even smaller one. Each gear moves faster because it is a little smaller. The smallest gear may turn extremely fast. Clocks operate with gears. So do cars and so does the device invented by the Indian scientists to produce electricity.
According to the officials in the United Nations, the idea is being tested at several places in India. The device is easy to operate and repair. And it can be moved easily. It costs about three hundred and seven dollars now to make such a device, but production of large numbers of them could cut the cost of each to about two hundred dollars. [br] Which of the following is true about the device mentioned in the passage?
选项
A、It has a large gear and a smaller gear.
B、It’ s easy to use, but difficult to move.
C、It’ s quite cheap.
D、It’ s still being tested.
答案
D
解析
推断题。根据文章最后一段内容,可知B、C两项与文章意思相反,D项正确。A项的这个设备有一个大齿轮一个小齿轮,很显然不对,因为第一段中提到的应该是一系的齿轮(a series of gears)。故选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3370402.html
相关试题推荐
______,somefamousscientistshavethequalitiesofbeingbothcarefulandcare
Hismanualofbotanyhasbecomea________amongscientists.A、masterpieceB、classi
______theuniversecouldneverdiewasoncebelievedbyscientists.A、ForB、WhyC
AnAmericaninventor,DeanKamen,sayshehasinventedtheworld’sfirstse
AnAmericaninventor,DeanKamen,sayshehasinventedtheworld’sfirstse
AnAmericaninventor,DeanKamen,sayshehasinventedtheworld’sfirstse
Scientistscanpredictregions______newspeciesaremostlikelytobefound.A、wh
CharlesDickens()manywonderfulcharactersinhisnovels.A、inventedB、discovere
CharlesDickens()manywonderfulcharactersinhisnovels.A、inventedB、discovere
ScientistsinIndiahaveinventedanewwaytoproduceelectricity.Theirin
随机试题
Collisionbetweenanaircraftandoneormorebirdsistermedabird-strike.
[originaltext]Weallknowthatexerciseisgoodforyourhealth.Butsomekinds
A.63 B.68 C.76 D.89 E.92
沉降观测时,沉降观测点的点位宜选设在下列()位置。A.每隔2~3根柱基上 B
患者男,30岁。近半年来出现尿频、尿不尽、尿道滴白及肛周隐痛不适,多次尿常规检查
男性,23岁,外伤造成颞下颌关节脱位,自行复位后未做进一步处理,以后下颌活动范围
类风湿关节炎(RA)常见的自身抗体不包括A:IgM型RFB:抗组蛋白抗体C:
下列选项中,符合所给图形的变化规律的是: A.如上图所示 B.如上图所示
统计行政处罚法定原则内容包括()。A.法无明文规定不处罚,处罚依据法定 B.实
经营性国有资产基础管理是整个经营性国有资产管理的基础,其具体工作不包括()
最新回复
(
0
)