2. 外语
  3. The passage gives a general description of both the advantages and disadvantages brought by a hydrogen economy. The key advanta

The passage gives a general description of both the advantages and disadvantages brought by a hydrogen economy. The key advanta

admin2009-04-23  60
问题 The passage gives a general description of both the advantages and disadvantages brought by a hydrogen economy.
The key advantages of fuel cells include raising the __________________ and reducing air pollution.
选项
答案efficiency of cars
解析 本题考查fuel cells的优点(advantages)。根据Prospects for the Future部分第二段末可以得知，fuel cell与内燃机相比最大的进步就是提高了效能并减轻了空气污染。
转载请注明原文地址:https://kaotiyun.com/show/DrZK777K
0

大学英语六级

相关试题推荐
随机试题
最新回复(0)