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One question per day; no prize for correct answers, it’s mainly for entertainment

2019-12-01View Original

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29. When installing involute cylindrical gears, the contact points are in an incorrect position with eccentric contact, and the reason for this is that the two gears (). ? A. Axial skew B. Non-parallel axes C. Excess center distance. The answer to the question from yesterday was: A. 8. In steel, ( ) is a harmful element. ? A、?S、PB、si、Mn???????C、P、Mn?

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