A.the driving for the vapour flow is the pressure drop
B.the driving force for the liquid flow is its weight
C.the liquids and vapours are always at their bubble point and dew point respectively
D.all of these answers
A.the driving for the vapour flow is the pressure drop
B.the driving force for the liquid flow is its weight
C.the liquids and vapours are always at their bubble point and dew point respectively
D.all of these answers