【Pump Technology Edition: Daily Question】April 9, 2020 (Section perk: 10 Wealth points for those who answer correctly before the answers are revealed)

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159 Any electrical device connected to a power source should be considered () unless it has been tested for electricity, and touching it is strictly prohibited. A. Dangerous B. Electric C. Unsafe. Answer to question 158 on April 10, 2020: B. 158. The lubricant tank is a device used for the supply, recovery, sedimentation, and storage of lubricant; it is equipped with a heater that warms the lubricant before the machine starts up, ensuring that the lubricant reaches a temperature within the range of (B) when the machine begins to operate, thus meeting the requirements for its proper functioning. A. 25℃–35℃ B. 35℃–45℃ C. 45℃–55℃. Answers are released the day before they are officially announced; those who get the answer right before the announcement receive 10 wealth points, those who get it right after the announcement receive 5 wealth points, and those who participate receive 3 wealth points. I’ve been a bit busy lately, so I’m responding to questions and giving scores a little slowly, but no matter how busy or late it gets, I will still send responses. Thank you all for your continued support