問題詳情

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

參考答案

答案:D
難度:困難0.397959
統計:A(22),B(29),C(8),D(39),E(0)

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