首页
登录
职称英语
What is talked about in the beginning of the passage? [br] [originaltext] Al
What is talked about in the beginning of the passage? [br] [originaltext] Al
游客
2023-11-02
31
管理
问题
What is talked about in the beginning of the passage? [br]
Although European countries have been spending more money on wind generating electrical facilities than we have been here in the U.S., there are combinations of factors which make the outlook quite promising for domestic wind farms. Many of the projects which have been attempted in Europe have not been commercially successful because they have been centered around massive projects—some as tall as twenty-story buildings with propellers a hundred meters across—that they have developed structural and other technical problems. Here in America, by contrast, we typically rely on smaller propeller units distributed across large land area, such as the five thousand acre installation near Palm Springs. Although these small installations are technically less efficient, in practical terms they have turned out to be much more reliable. The other factor which has helped to make the domestic wind power projects more successful has been the introduction of computers to regulate the interactions between the propellers and the electrical generators. Because of the reduced cost of computerized controllers and the greater efficiency they bring, the cost of wind generated power has dropped from 30 cents per kilowatt hour to 7-9 cents—less than the cost of conventional coal or oil burning power plants.
选项
A、they occupy too much space.
B、their windmills are too small.
C、they involve too many computers.
D、they are of large scales.
答案
D
解析
细节题。文中指出欧洲国家的许多风力发电项目在商业上并不成功,主要因为其设施极其庞大,由此引发了很多结构和技术问题。故应该选答案D,large scale是原文中massive的同义替换。
转载请注明原文地址:https://tihaiku.com/zcyy/3150699.html
相关试题推荐
Whereprobablyarethetwospeakers?[br][originaltext]W:Hi,I’mnewhere,so
Whatistheconversationmainlyabout?[br][originaltext]W:Hi,Mark,it’sap
Whatistheconversationmainlyabout?[br][originaltext]W:Hi,Mark,it’sap
Whatistheconversationmainlyabout?[originaltext]W:Hi,Mark,it’sapretty
What’stheprobablerelationshipbetweenthetwospeakers?[originaltext]M:Nice
Theconversationismainlyabout[br][originaltext]M:Comeinandhaveaseat
Whatdoweknowfromtheconversationabouttheman?[br][originaltext]M:I’m
Whatdoesthemanhopethewomantodo?[br][originaltext]M:Hello,Mary,you’
Whatdoesthemanhopethewomantodo?[originaltext]M:Hello,Mary,you’rejus
Whatarethetwospeakersmainlydiscussing?[br][originaltext]W:Sowheredo
随机试题
______wearrivedinamoreurbanarea,whereJimtookmetoaplacecalledBosto
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarter
Inthe1990s,DemiMoorewasamajormoviestarand,asthewifeofBruceWi
Theidealcompanionmachinewouldnotonlylook,feel,andsoundfriendlybu
[originaltext]W:Doyouhavethepaperbackeditionofthisbook.Ithinkit’ll
某新建高速公路土方路基路床施工中,其中某路段压实层质量检查的压实度 检测结果如
对于“真诚不等于说实话”,理解不正确的是()A.表达真诚应有助于来访学生的成长
280)发信机发出的信号电平,经通道衰减到达对侧收信机入口时,应有足够的余量。一
男性,33岁,10年来阵发性心悸,每次心悸突然发作,持续30min至3小时不等
患者男,62岁。上颌义齿使用2年,近感义齿松动,有食物滞留基托内,咀嚼时痛,昨日
最新回复
(
0
)