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English Translations » 电气工程圈 » 【Registered Electrical Automation Engineer Section】20170729

【Registered Electrical Automation Engineer Section】20170729 CRT monitors in fire alarm systems, fire communication..

2017-07-29View Original

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The power supply for CRT monitors in fire alarm systems and fire communication equipment should be provided by ( ). 　　A. Dual power supply 　　B. Dual power supply with automatic switching at the end points 　　C. Battery power supply 　　D. UPS unit power supply
Reply #22017-07-29
　B. Dual-power supply with automatic switching at the end points

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Translated at 2026-07-23 01:49:33

Original: https://bbs.hcbbs.com/thread-1809985-1-1.html

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