Giving the child problems he cant solve will only frustrate him（） A: baffle B: worry C: alarm D: cultivate

The hydraulic condition of the rotary baffle plate flocculation tank is better than that of the reciprocating type， and head loss of the rotary type is 40% less than that of the reciprocating type。 （ ）

The baffle plate used in the reservoir of a hydraulic system serves to ______. A: Reduce fluid turbulence at the pump suction B: Minimize the amount of contamination deposited from return lines entering the system C: Minimize the entrance of entrained air through pump inlet line D: Any one of the other alternatives