A.粗車(chē)—半精車(chē)—粗磨—精磨 B.粗車(chē)—半精車(chē)—精車(chē) C.粗車(chē)—半精車(chē)—粗磨 D.粗車(chē)—半精車(chē)—粗磨—細(xì)磨
A.水 B.汽油 C.皂化液 D.煤油