One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； September 10th
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This post was last edited by Forever※Undeterred on 2016-9-15 at 08:33. Multiple-choice question: An acetylene water-ring compressor is a machine that converts the ( ) rotation of an electric motor into the ( ) of gas. A. Mechanical energy, kinetic energy ； B. Kinetic energy, mechanical energy ； C. Static pressure energy, kinetic energy ； D. Kinetic energy, static pressure energy ； Answer: A, Mechanical energy, Kinetic energy ；
This post was last edited by lakerll on 2016-10-6 22:55 A