题目内容
There is a growing realization that the only effective way to achieve further reductions in vehicle（）is to replace conventional diesel fuel and gasoline with cleaner-burning fuels.
查看答案
搜索结果不匹配？点我反馈
更多问题
If they mean to you（）they mean to me, they may perhaps be helpful also to our sons for their guidance and inspiration.
金属薄板、船体、飞机外壳等常会因剧烈的振动辐射较强的噪声，采取以下哪种方法可有效降噪（）？
树叶落下的沙沙声的声压级约为（）。
The TTS run will demonstrate （）the car can take curves as fast as a human driver—without driving off a cliff.
微信支付 
支付宝支付