A.電流小,出口門前壓力高 B.電流大,出口門前壓力高 C.電流小,出口門前壓力低
A.2-3倍 B.4-7倍 C.5-10倍
(A)單級(jí)泵和多級(jí)泵 (B)單吸泵和雙吸泵 (C)臥式泵和立式泵