变压器的效率指的是变压器的输入有功功率占输出有功功率的百分比。()
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What task was completed by the Devonshire Apartment Management Office in the past 3 months？
A. Purchasing new furnace systems for all tenants
B. Replacing furnace filters at no cost to residents
C. Improving the electrical wiring system in the office park
D. Installing new water faucets in every apartment
在电压互感器回路中一般使用熔断器作为保护电器。()
For what seminar is Mr. Myers registering？
A. Emerging trend in pharmacy practice
B. Losing sight of ethics
C. New pharmaceutical area
D. New prescription systems
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