【Pump Technology Edition: Daily Question】January 25, 2020 (Spring Festival bonus: 10 wealth points for those who answer correctly before the answers are revealed)

2020-01-25View Original

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84. Compared with gear transmission, worm drive has outstanding advantages such as ( ). A. High power transmission capacity and high efficiency; B. Affordable materials and good interchangeability; C. Large transmission ratio, smooth operation with no noise. Answer to yesterday’s question: ? ? 83. For compressors whose compression medium is toxic or harmful, or which pose an explosion risk when mixed with air, what should be done before the compressor is put into normal operation (? ? ) Permutation. A. Carbon dioxide gas B. Nitrogen C. Oxygen (Answers are released the day before they are announced; 10 wealth points for correct answers before the announcement, 5 wealth points for correct answers after the announcement, and 3 wealth points for participation.)

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【Pump Technology Edition: Daily Question】January 25, 2020 (Spring Festival bonus: 10 wealth points for those who answer correctly before the answers are revealed)

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