A.1/3~2/3 B.1/3~1/2 C.1/2 D.2/3
A.3~5 B.5~10 C.10~15 D.15~20
A.量油常數(shù)/s B.量油常數(shù)/v C.量油常數(shù)/m3 D.量油常數(shù)/t