A.4%; B.6%; C.8%; D.10%
A.評(píng)價(jià)汽車(chē)的動(dòng)力性能; B.克服離心力保證行車(chē)安全; C.評(píng)價(jià)燃料消耗經(jīng)濟(jì)性; D.確定汽車(chē)爬坡采用哪一排檔
A.20m; B.10m; C.50m