2. 外语
  3. Which of the following gives a general idea of how the noise-killing system works? Besides its main use the noise-killing syste

Which of the following gives a general idea of how the noise-killing system works? Besides its main use the noise-killing syste

admin2008-12-15  47
问题 Which of the following gives a general idea of how the noise-killing system works?
Besides its main use the noise-killing system can ______.
选项 A、make a car lighter
B、make a car quieter
C、reduce the cost of a silencer
D、improve the performance of a silencer
答案A
解析 细节题。根据文章第四段可知。所以[A]正确。
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