单选题
公共英语二级
2010-07-24
Besides its main use the noise killing system can＿＿＿．
参考答案
A
答案解析
判断推理题。通过文章第三段：Another good thing about the use of noise-killing systems is that it saves the need for a silencer；this not only reduces the weight of a car…可知，应用了这项设备，还可以降低汽车的重量。所以正确的答案为A。
