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
2025-03-06
28
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] Who first thought of using bullocks to provide energy?
选项
A、Indian energy officials.
B、Scientists in India.
C、Officials in the United Nations.
D、Researchers in Europe.
答案
B
解析
细节题。根据全文第一句话“印度的科学家已经发明了一种新型的发电方法”可知,B项正确,故选B。
转载请注明原文地址:http://tihaiku.com/zcyy/3984960.html
相关试题推荐
CharlesDickens()manywonderfulcharactersinhisnovels.A、inventedB、discovere
ScientistsinIndiahaveinventedanewwaytoproduceelectricity.Theirin
Scientistshavetoworkhardtokeep______withmoderndiscoveriesanddevelopm
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
Atthebeginningoflastcentury,medicalscientistsmadeaninterestingdisc
随机试题
PASSAGETHREE[br]WhydidOrensteinkeepherpregnancyhiddenfromothers?Becau
TheWebsometimesisseemedastheSirenspecterthatluresusintositting
sin(x-y)cosy+cos(x-y)siny=( )A.sinx B.
影响药物透过血脑屏障的主要因素是( )。A.蛋白结合率 B.清除率 C.半
有些日本人认为不应该纠缠于中日过去的鸡毛蒜皮的陈年旧账,要放眼中日友好的巨大利益
普通干粉灭火剂能用于扑灭()火灾。A.A类 B.B类 C.C类 D.D类
幼年时生长激素分泌不足会导致 A.呆小症B.侏儒症C.肢端肥大症D.黏液
根据《药品注册管理办法》,药品注册事项不包括A.许可事项 B.备案事项 C.
下列投资方案评价指标中,考虑货币时间价值因素的是()。A.投资利税率 B
下面有关特殊培训的成本与收益安排的陈述正确的有()。A.特殊培训的成本全部要由
最新回复
(
0
)