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
13
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] From the passage it can be assumed that wind energy is better because ______.
选项
A、it is cheaper than electric power
B、it does not alter the environment as much as other types of power
C、it lasts longer than electric power
D、it is more efficient than electric power
答案
A
解析
此题为推论题。根据线索词,水力发电需要“the flooding of large areas”、“the alteration of ecology”,而且还“produce waste”,这说明电能成本大,因而可推断出风能耗资少,因此A项为正确选项。
转载请注明原文地址:https://tihaiku.com/zcyy/3177256.html
相关试题推荐
TheearliestverticalwindmillswereusedinPersiamorethan2,000yearsa
TheearliestverticalwindmillswereusedinPersiamorethan2,000yearsa
Peoplehavebeenpaintingpicturesforatleast30,000years.Theearliestp
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
[originaltext]Goodmorning,everyone.Today’stopicisfastfood.Formany
TheTelecommunicationsRevolutionA)Atransformationisoccu
针对水运工程所用的土工合成材料,请回答以下问题:8)以下为一组长丝机织土工织物试
对不孕症进行刮宫者选择何时进行A.月经来潮12小时内进行 B.月经第一天进行
根据以下资料,回答下列问题。 2013年上半年,全国人出境2.19亿人次,同比
“三个代表”重要思想是在应对中国社会经济发展中出现的各种实际问题的过程中形成和发
方先生现年40岁,从现在起每年储蓄4万元于年底进行投资,年投资报酬率为4%。他希
以下年轻恒牙外伤发病特点中哪一项是错误的A.恒牙外伤高发期为7~9岁 B.男性
石方爆破施工作业正确的顺序是()。A.钻孔—装药—敷设起爆网络—起爆 B
新生儿早期患呼吸道感染的可能原因是A、补体成分缺陷 B、先天免疫缺陷 C、皮
最新回复
(
0
)