Production Technology [Question of the Day] Thursday, August 25, 2011
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This post was last edited by Refinery Operator on 2011-8-26 10:11. Multiple choice: 1. When measuring the performance of a centrifugal pump, if the pressure gauge is installed behind the control valve, then the pressure gauge reading p2 will (). A. Decreases as flow rate increases ； B、Increases as flow rate increases ； C. Remains essentially constant as flow rate increases ； D: It increases first and then decreases as the flow rate increases. 2. When selecting a centrifugal ventilator, it is based on (). A. Actual air volume, actual air pressure ； B、Standard air volume, standard air pressure ； C. Standard air volume, actual air pressure ； D. Actual air volume, standard wind pressure. Please hide the reply! Answer: 1B 2D
Reply 1# *nyang3390 1C2A
Reply 1# *nyang3390 1 B 2 D
Reply 1# *nyang3390 BA
Reply 1# *nyang3390 A D