【Pump Technology Edition: Daily Question】January 19, 2020 (Spring Festival bonus: 10 Wealth points for those who answer correctly before the answers are revealed)

2020-01-19View Original

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78. When drilling on a drill press, （） is the feed motion. A. Rotation of the drill bit B. Axial movement of the drill bit C. Rotation of the workpiece. The answer to the question from yesterday was A. 77. Technical research refers to scientific research projects that are closely related to (A). ?A. Engineering B. Technology C. Science (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 19, 2020 (Spring Festival bonus: 10 Wealth points for those who answer correctly before the answers are revealed)

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