【Daily Question: Pump Equipment】Multiple-choice Question, May 8, 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 for active participation； 2. A correct answer earns 5 wealth points ； 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. Among the following parameters related to the casting of impellers for centrifugal pumps, which factors need to be given special consideration during impeller design based on casting capabilities? ( ) A. Impeller diameter B. Blade thickness C. Flow channel width D. Degree of blade twist E. Inlet diameter Answer: BCD