【Pump Technology Edition: Daily Question】January 23, 2020 (Spring Festival bonus: 10 Wealth points for those who answer correctly before the answers are revealed)

2020-01-23View Original

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82. After slight wear of the mechanical seal face, it can be repaired by ( ) and then reused. A. Grinding B. Polishing after grinding C. Polishing. The answer to the question from yesterday was: C. 81. The internal gear of a gear coupling has a certain amount of axial play, so as to ensure that both shafts have their own (C) margin of movement. ? A. Oil storage gaps B. Deformation under stress C. Thermal expansion and contraction (Answers are released the day before they are made public; 10 wealth points for correct answers before the release, 5 wealth points for correct answers after the release, and 3 wealth points for participation)

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【Pump Technology Edition: Daily Question】January 23, 2020 (Spring Festival bonus: 10 Wealth points for those who answer correctly before the answers are revealed)

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