【Pump Technology Edition: Daily Question】February 10, 2020 (Spring Festival bonus: 10 wealth points for those who answer correctly before the answers are revealed)

2020-02-11View Original

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100. Ordinary gears are usually made from 45# steel through ( ) or ( ) treatment. A. Backflow, carburizing B. Quenching, annealing C. Normalizing, quenching and tempering. The answer to question 99 from the day before yesterday was C. 99. Dynamic balancing tests can correct ( ) types of imbalance, but not ( ) types of imbalance. A. Material properties, weight B. Rotor, impeller C. Forces, couples. (The answers are announced the day before they are released; those who get it right before the announcement receive 10 wealth points, those who get it right after the announcement receive 5 wealth points, and those who participate receive 3 wealth points.)

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【Pump Technology Edition: Daily Question】February 10, 2020 (Spring Festival bonus: 10 wealth points for those who answer correctly before the answers are revealed)

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