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This post was last edited by *aojiaoya0546 on 2016-8-17 at 15:21. http://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.png Recently, after attending training on the safety management of special equipment, I have come to realize that only by having a thorough understanding of relevant knowledge can one better manage production processes on site. Since June, we have been holding a daily quiz on knowledge related to the safety management of special equipment; we welcome all members to participate actively. Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. Multiple-choice question: When the power supply uses a three-phase four-wire system, starting from the distribution device in the elevator machine room, the working neutral wire and the protective neutral wire must ( ). A. Separate B. Combine C. Connected D. Merge Answer: A http://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.pnghttp://bbs.hcbbs.com/static/image/hrline/line7.png http://bbs.hcbbs.com/static/image/hrline/2.gif http://bbs.hcbbs.com/static/image/hrline/2.gif 【Production and Management Section】Seeking moderators and technical discussants to join us 【Haichuan Charity】Large-scale environmental protection photo-sharing event themed “Sharing the Same Blue Sky”! 【Safety Activities】Event to share advanced on-site management experiences 【Task-based reward: 3000 wealth points】Original] Organize and format the content of the dashboard posts 【Task-based reward: 5000 wealth points】Original] Organize and summarize the content of the control panel posts ---------Sea River is seeking partners for premium advertising space for charity events-------
When the power supply is of the three-phase four-wire type, starting from the distribution device in the elevator machine room, the working neutral wire and the protective neutral wire must be (A) separated.