【Pump Technology Edition: Daily Question】February 9, 2020 (Spring Festival bonus: 10 wealth points for those who answer correctly before the answers are revealed)
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99. The dynamic balancing test can correct imbalance amounts of ( ), but it cannot correct imbalance amounts of ( ). A. Material, weight B. Rotor, impeller C. Force, couple. The answer to question 98 was C; yesterday. 98. When a mechanical seal is in operation, a liquid film is formed between the rotating ring and the stationary ring, and this liquid film serves to seal, lubricate, and (C). A. Cooling B. Bearing load C. Balancing pressure (Answers are released the day before they are made public; 10 wealth points for correct answers before publication, 5 wealth points for correct answers after publication, and 3 wealth points for participation)
The C dynamic balancing test can correct not only (force) imbalances but also (couple) imbalances.