A.L/(min.m.m) B.(L/min)/(m.MPa) C.L/(m.MPa) D.(L/min)/(min.m.m)
A.先上游,后下游,最后中間排 B.先下游,后中間,最后上游排 C.先上游,后中間,最后下游排 D.先下游,后上游,最后中間排
A.先稀后濃再稀 B.先濃后稀再濃 C.先稀后濃 D.先濃后稀