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【Daily Question】Utilities - Mechanical & Electrical - 20200510

2020-05-10View Original

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The winding method is determined based on the number of doors in the pulley block; generally, for more than seven doors, ( ) should be used. A. Double-head straight threading B. Reverse threading C. Interleaved threading D. Straight threading Answer: A. For pulley systems with three or fewer doors, straight threading is suitable; for 4–6 doors, interleaved threading is appropriate; for 7 or more doors, double-head straight threading is recommended

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