A.〔(Vto-Vfw)×CTSh〕×VCF×WCF B.mg×CSW C.{〔(Vto-Vfw)×CTSh〕×VCF×WCF}–mfr D.1+2×(Ts-20)
A.VC+△VC×ρw/ρC×CTSh B.VC+△VC×ρw/ρC C.VC+△VC×ρC/ρw D.△VC+VC×ρw/ρC
A.54.280 B.54.307 C.55.701 D.56.370