是集中一个地方处理起来合算。比每个汽车都要加装各类器具减少排放来得可行性更高的吧。

来源: needtime 于 2016-04-07 16:51:59 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.