【Pump Technology Edition: Daily Question】February 5, 2020 (Spring Festival bonus: 10 Wealth points for those who answer correctly before the answers are revealed)

2020-02-05View Original

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95. The main factor causing thermal deformation of a body is the presence of () inside and outside the body. A. Temperature difference B. Stress C. Frictional heat. The answer to question 94 yesterday was A. 94. When selecting a material for a shaft, one should consider ( ), ( ) and ( ). ? A. Strength, stiffness, wear resistance B. Deflection, stiffness, wear resistance ?? C. Hardness, strength (Answers will be released the day before they are made public; those who get it right before the release receive 10 wealth points, those who get it right after the release receive 5 wealth points, and those who participate receive 3 wealth points)

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【Pump Technology Edition: Daily Question】February 5, 2020 (Spring Festival bonus: 10 Wealth points for those who answer correctly before the answers are revealed)

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