【Daily Question: Pump Equipment】Fill-in-the-blank and True/False Questions, May 3, 2019

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bg2.png Rules for answering questions and management: 1. If all answers to a question are incorrect, a reward of 2 wealth points will be given as an incentive for active participation； 2. A reward of 5 wealth points is given for partially correct answers ； A reward of 8 wealth for all correct answers ； 3. Rewards for answers are available once per person only ； 4. Each reply allows for one management rating only ； 5. The answer and explanation will be visible after responding ； 6. The reply reward is valid for 48 hours. Studying* and winning awards again; come by here every day. 1. Fill in the blank: Without considering the effect of temperature, for identical open-loop systems, the NPSHA of a system installed in a highland area is ( ) greater than that of a system installed in a coastal area ； 2. Judgment: In a sump pump, the check valve installed on the pump inlet pipeline to prevent backflow is a one-way valve ( ). Answer: 1, Small ； 2. Correct