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When assembling bearings under a 168 interference fit using the mechanical oil heating method, the maximum oil temperature shall not exceed (). A. 130℃ B. 120℃ C. 125℃ The answer to question 166 on April 16, 2020 is C. Question 166: The elastic governor of a steam turbine uses (C) to regulate the speed. A. Axial force B. Frictional force C. Centrifugal force. The answer to question 167 on April 17, 2020 is B. Question 167: The outer diameter of the coupling is 200 mm; the allowable deviation in alignment between the two shafts connected by this coupling is generally (B). A. Radial: <0.05 mm, Axial: <0.3 mm/m B. Radial: <0.05 mm, Axial: <0.2 mm/m C. Radial: <0.09 mm, Axial: <0.2 mm/m. The answer to question 165 dated April 15, 2020 is B. For centrifugal pumps with a rotational speed in the range of 1800–4500 revolutions per minute, the vibration level at the bearings during operation should not exceed (). A、0.15mm B、0.05mm C、0.10mm (The answers will be released the day before they are officially announced. Those who guess correctly before the announcement will have a few lucky forum members randomly selected to receive 10 wealth points each; those who guess correctly after the announcement will receive 5 wealth points. Knowledge is priceless, but participation is what matters.) I’ve been a bit busy lately, so it’s taking some time to post questions and provide feedback with scores. But no matter how busy or late it gets, I will still post and respond to everyone. For the development of the forum and for the benefit of its members, please give your continued support. Thank you very much, and I also thank my friends who have supported me throughout this journey – thank you all.