【Daily Question】Pump Equipment Technical Exchange Edition 20180215

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Participation: Prize 3 Wealth； Correct answer: Reward of 10 wealth points ； Note: A reward of 10 wealth points will be given for correct answers within 48 hours; this post is valid for 48 hours. Multiple-choice question: When a centrifugal pump operates at a certain rotational speed, the greater the density of the fluid being pumped (with all other physical properties of the fluid remaining constant), the greater its head will be (). The larger A is, the smaller B becomes. C remains unchanged. D is not necessarily true. Correct answer: C. It’s the end of the year again; wish you good luck throughout. As the new year approaches, hope you achieve even greater success in the future. With the end of one year giving way to a new one, may your happiness never end. Every blessing expresses true feelings; happiness will always be with you. Wish you a happy New Year and all the best!