【Pump Technology Edition Daily Question】January 20, 2020 (Spring Festival bonus: 10 wealth points for those who answer correctly before the answers are revealed)

2020-01-21View Original

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79. The marking for anti-wear hydraulic oil products is (). A、L－HL32 GB11118 B、L－HM32 GB11119 C、L－AN32 GB443 Answer to yesterday’s question: B 78. When drilling on a drill press, (B) is the feed motion. A. Rotation of the drill bit B. Axial movement of the drill bit C. Rotation of the workpiece (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】January 20, 2020 (Spring Festival bonus: 10 wealth points for those who answer correctly before the answers are revealed)

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