The pipe friction and the resistance will （） as a result of an increase in the amount of fluid flowing through the system.

A.increase discharge pressure
B.increase suction vacuum
C.develop pulsation flow
D.keep a steady rate of flow

A.slack enough to allow slight leakage of fluid
B.slightly clocked
C.brought up tight so as not to allow any leakage
D.fitted with a relief valve

A.Volute pump
B.Diffuser pump
C.Regenerative pump
D.All of the above