首页
登录
职称英语
The earliest vertical windmills were used in Persia more than 2,000 years a
The earliest vertical windmills were used in Persia more than 2,000 years a
游客
2023-11-11
10
管理
问题
The earliest vertical windmills were used in Persia more than 2,000 years ago for the grinding of grain. Windmills were adopted for pumping water in North America by the middle of the nineteenth century. Their use declined drastically in the 1930’s when inexpensive electricity reached the rural areas. A renewed interest in the use of wind power to generate electricity followed the energy crisis of the 1970’s. A program of the United States Department of Energy encouraged the development of new machines, the construction of wind farms, and an evaluation of the economic effect of a large scale Use of wind power.
Public acceptance of wind energy conversion systems is an important consideration in planning for the widespread application of wind energy. Studies have shown that the environmental impact of such systems is relatively small compared with conventional electric power systems. Wind-powered systems do not require the flooding of large land areas or the alteration of the natural ecology, as dohydroelectric systems. Furthermore; they produce no waste products or thermal or chemical effluents, as fossil-fueled and nuclear fueled systems do. [br] According to the passage, which of the following was wind energy first used for?
选项
A、Pumping water.
B、Electricity.
C、Propelling ships.
D、Grinding grain.
答案
D
解析
此题为细节题。文中第一句可找到。
转载请注明原文地址:https://tihaiku.com/zcyy/3177254.html
相关试题推荐
Howdidchildrenlearnintheearliesttimes?[br][originaltext]Let’slook
Howdidchildrenlearnintheearliesttimes?[originaltext]Let’slookback
TheearliestverticalwindmillswereusedinPersiamorethan2,000yearsa
Peoplehavebeenpaintingpicturesforatleast30,000years.Theearliestp
Peoplehavebeenpaintingpicturesforatleast30,000years.Theearliestp
Playisthe【C1】______businessofchildhood.Fromearliestinfancy,everychi
Playisthe【C1】______businessofchildhood.Fromearliestinfancy,everychi
Playisthe【C1】______businessofchildhood.Fromearliestinfancy,everychi
Playisthe【C1】______businessofchildhood.Fromearliestinfancy,everychi
Playisthe【C1】______businessofchildhood.Fromearliestinfancy,everychi
随机试题
InthebookMenAreFromMars,WomenAreFromVenus,theauthorstatesthat
Thechangesinlanguagewillcontinueforever,butnooneknowssure
TheWesthasbeguntotakemorenoticeoftheEast.Thefifth【C1】______o
Themostimportanttechnologicaleventofourtimeistheriseofthecompu
混凝土配合比设计的相关问题如下:(2)混凝土初步配合比为345:190:630:
易入血分,可会聚于局部,腐蚀血肉,发为痈肿疮疡的邪气是A风 B湿 C寒 D
Whatvocabularylearningstrategydoest
根据税务行政复议法律制度的规定,纳税人对税务机关( )的行为不服,可以不经复议直
某场所配置的手提式二氧化碳灭火器出厂时间为2014年6月,于2019
首次公开发行股票并在主板上市的,持续督导的期间为证券上市当年剩余时间及其后的()
最新回复
(
0
)