【Daily Question】20150703 Knowledge on Fan Classification (Reply + 2 Wealth points for a correct answer, +3 Wealth points additionally)

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This post was last edited by dongjiang1001 on 2015-7-6 at 16:00. To increase popularity in the boiler area and meet the requirements of the region, we are launching the \"One Question per Day\" activity aimed at promoting technical exchanges, livening up the atmosphere, and offering rewards. All members are welcome to participate actively. Common fans are classified into ( ) and ( ) according to their working principle. Reference answer: Centrifugal ； Axial flow. Reply in the comments with the answer you think is correct (for fill-in-the-blank questions, 1 extra point for each correct answer; 3 extra points if all answers are correct). 1. Participating in answering questions + 2 wealth points (set to automatically add wealth) ； 2. No additional points will be given for incorrect answers; the correct answer will be provided in the comments ； 3. +3 points to wealth if the answer given is correct ； 4. When responding, provide a detailed explanation and analysis of the question or answer; depending on the quality of the response, an additional reward of 3 to 15 points in wealth will be given ； 5. Replies with correct answers and accurate explanations will be designated as the best reply (best assistance). Note: We will close this post after 72 hours to reveal the answers and explanations, as well as the best response (the best help).