Hywind is a test run, but the benefits for perfecting floating windfarm technology could be extremely large. Out at sea, the wind is often stronger and steadier than close to shore, where all existing off shore windmills are planted. Deepsea farms are invisible from land, which helps overcome the windmillaseyesore objection. If the technology catches on, it will open up vast areas of the planet's surface to one of the best lowcarbon power sources available.
本文为科普短文,讲述世界上第一个深海风力发电机——涡轮发电机以及它的发电原理及好处。
9.The Hywind project uses totally new technology to ensure the stability of________.
A. the cables which tie the spar to the ocean floor
B. the spar which is floating in deepsea water
C. the blades driven by strong and steady sea wind
D. the stones filled in the spar below the sea surface
答案:B。细节理解题。由文章第二段特别是“these will keep the spar stable and prevent the turbine from moving up and down in the waves”可知B项正确。
10.To balance a bigger turbine high on a floating spar, a new type of turbine is to be designed with its gearbox sitting________.
A. on the sea floor
B. on the spar top
C. at sea level
D. behind the blades
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