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34.Which device is used to provide a limited amount of electric power for a finite periods of time to certain loads in case of a power failure on its supply side, with no break in the flow of power to the loads?
(A)Power governor
(B)Transformer
(C)Solid-state power converter
(D)Uninterruptible power supply


34.Which device is used to provide a lim..-阿摩線上測驗