气球里的气体喷出时,会产生一个和喷出方向的推力,这个力叫。 答案:【1】相反【2】反冲力“___________” is used for saying that what you do is more important than what you say you will do.A. Every dog has its day.B. Practice makes perfect.C. Many hands make light work.D. Actions speak louder than words.