翻译：Alternating Current
举一反三
- The function of direct current regulated power supply is to input an alternating current power of 220volts, so that it can output __________.( ) A: alternating current 200 volts voltage B: direct current 24 volts voltage C: direct current 200 volts voltage D: alternating current 24 volts voltage
- The effective value of ac voltage or current is（ ） A: The average value of a voltage or current B: DC equal to the AC thermal effect is defined as the effective value of AC C: voltage or current are 0.707 of their amplitudes D: closely related to the frequency of alternating current
- 中国大学MOOC: Alternating current（交流电） as a source of power has certain advantages over direct current（直流电）. 前后两个下划线介词短语分别充当_______。
- 智慧职教: 交流发电机的（）是产生交流电动势的？ What produces the alternating current electromotive force?
- Alternating current as a source of power has certain advantages over direct current. 前后两个下划线介词短语分别充当_______。