【Daily Question: Pump Equipment】True or False Question, 2018.12.25
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Rules for the multiple-choice questions in bg4.png: 1. A reward of 2 Wealth is given for actively attempting both questions despite getting them wrong; 4 Wealth is awarded for getting one question right and the other wrong; 6 Wealth is given for answering both questions correctly ； 2. Rewards for answers are available once per person only ； 3. Each reply allows for one management rating only ； 4. The answer and its explanation will be visible after responding ； 5. The reward is valid for 48 hours. Studying* and winning awards again; come by here every day. 1. For media that tend to crystallize or polymerize, a filter screen should be installed at the pump inlet ( ). 2. From the perspective of ease of maintenance, a check valve should be located upstream of the pump outlet valve ( ). Answers: Incorrect, Correct
I have a question: why is the first question wrong?