One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 509
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This post was last edited by YongBu※YanQi on May 5, 2016, at 19:03. Fill in the blanks: The purpose of operating two water pumps in series is to increase _________ or to prevent ________ of the pumps. Answer: Head ； Cavitation.
Increase head pressure to prevent insufficient head
Increase pump outlet pressure； Prevent unauthorized shutdowns
The purpose of operating two water pumps in series is to increase the ___head__ or to prevent ___cavitation__ in the pumps.
To increase the head or to prevent cavitation in the pump
The purpose of operating two water pumps in series is to increase the ___head_____, or to prevent ___cavitation_____ in the pumps.