powering a city its a breeze
now, windmills are breaking into a new frontier. though still in its teething stages, the urban turbine is a high-tech windmill designed to generate energy from the rooftops of busy cities. lighter, quieter, and often more efficient than rural counterparts, they take advantage of the extreme turbulence and rapid shifts in direction that characterize urban wind patterns.
but so far, they are being designed more for public or commercial buildings than for private homes. the smallest of the current models weigh roughly 200 kilograms and can be installed on a roof in a few hours without using a crane.
problems remain, however, for example, public safety concerns, and so strict standards should be applied to any potential manufacturer. vibrations are the main problem in skyscraper-high turbine. people dont know what it would be like to work there, in an office next to one of the big turbines. it might be too hectic.
31. what are the symbols of the netherlands according to the first paragraph?
b. wooden shoes and wooden windmills.
d. both a and b.
a. it is a windmill put on rooftops of buildings for energy generation.
c. it is light and quiet and therefore more efficient.
33. the smallest models of an urban turbine
b. weighs 2,000 kilograms.
d. can he installed with a crane.
a. the dutch are natural pioneers.
c. the netherlands is windier than germany, finland and slovenia.
35. according to the last paragraph, what are the advantages of wind power technology?
b. it can replace nuclear power plant.
d. both a and c.
2015秋冀教版英语八上Unit 1《Lesson 5 Meet Ms. Liu》ppt课件
2015秋冀教版英语八上Unit 1《Lesson 1 Back to School》flash课件
冀教版初中英语八年级上册单元测试ppt版(1)
2015秋冀教版英语九上Unit 6《Lesson 35 Theatres Are Fun》mp3课文朗读
2015秋冀教版英语九上Unit 6《Lesson 35 Theatres Are Fun》ppt课件
冀教版初中英语八年级上册单元测试-月考测试(1)ppt版
冀教版八上《Unit 3 Families Celebrate Together》(lesson19-20)ppt练习课件
2015秋冀教版英语九上Unit 6《Lesson 32 Moving Pictures》ppt课件
2015秋冀教版英语八上Unit 1《Lesson 3 Getting to know You》flash课件
冀教版初中英语八年级上册单元测试ppt版(6)
冀教版初中英语八年级上册单元测试ppt版(5)
2015秋冀教版英语九上Unit 6《Lesson 34 The Fisherman and the Goldfish(Ⅱ) 》ppt课件
2015秋冀教版英语八上Unit 2《Lesson 12 Karen’s Hair Stood Up》ppt课件
2015秋冀教版英语九上Unit 6《Movies and Theater》单元复习课朗读
冀教版初中英语八年级上册期末测试题ppt版
2015秋冀教版英语八上Unit 1《Lesson 5 Meet Ms. Liu》flash课件
2015秋冀教版英语八上Unit 1《Lesson 1 Back to School》ppt课件1
2015秋冀教版英语九上Unit 6《Lesson 34 The Fisherman and the Goldfish(Ⅱ) 》mp3单词读音
2015秋冀教版英语八上Unit 1《Lesson 4 Best Friends》flash课件
2015秋冀教版英语八上Unit 1《lesson 2 Many Faces, One Picture》ppt课件
2015秋冀教版英语九上Unit 6《Lesson 36 Making Plays Is Fun》ppt课件
2015秋冀教版英语八上Unit 1《Lesson 3 Getting to know You》ppt课件
冀教版初中英语八年级上册单元测试ppt版(7)
冀教版初中英语八年级上册期中测试题ppt版
冀教版初中英语八年级上册单元测试ppt版(3)
2015秋冀教版英语八上Unit 1《Lesson 5 Meet Ms Liu》ppt课件1
2015秋冀教版英语八上Unit 1《Lesson 6 Jenny’s Week》ppt课件1
2015秋冀教版英语九上Unit 6《Lesson 36 Making Plays Is Fun》mp3单词读音
2015秋冀教版英语八上Unit 1《Lesson 6 Jenny’s Week》flash课件
冀教版初中英语八年级上册单元测试ppt版(2)