A.增加 B.減小 C.不變 D.為零
A.VC=Vh/[1-(ph-Pc)F] B.VC=Vh/(ph-Pc)F C.VC=Vh/(pc-ph)F D.VC=VhF/(ph-Pc)
A.q與X3成正比 B.q與X2成正比 C.q與X2成反比 D.q與X3成反比