【Daily Question】2015.09.21 (2 Wealth points for replying, +3–8 Wealth points for a correct answer)

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This post was last edited by WQC on 2015-9-22 at 15:33. The Mechanical Section has introduced the \"One Question per Day\" feature, which aims to foster an active atmosphere for technical discussions and guide the direction of such exchanges. It also provides users with financial rewards, helping them experience various cool features. Multiple-choice question: The head of a centrifugal pump refers to (D) A、the actual lift height of the fluid ； B. Convert the pressure difference between the liquid outlet pump and the inlet pump into a liquid column height ； C. Suction lift of the pump ； D、The energy obtained per unit weight of liquid by the pump. Please note: We will close this thread after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation. Charisma Reward: Those who post a topic in this section within two days to provide a detailed explanation or discussion of the knowledge points related to this question are asked to reply/comments in this post to inform us, and we will award them charisma points. It is not allowed to simply copy and paste; original content is preferred, with at least some organization by the user along with personal insights. After registration, we will rank based on the content of the posts: the last-place contestant will receive +1 charm, the second-to-last +2 charm, and so on, with the highest score getting +5 charm.