【单选题】Someone who lacks staying power and perseverance is unlikely to __________ a good researcher. [ ]
【单选题】昨日はいい天気だった( )、今日は雨です。
【单选题】Vocabulary and Structure: With “classical” electronics, electrical currents and voltage are used to carry information, whereas with power electronics, they carry .
【简答题】In contrast to electronic systems concerned with transmission and processing of , in power electronics substantial amounts of are processed.
【单选题】Choose the correct words or phrases to complete the sentences. Solar power can also be used to power portable electronics, ____ direct sunlight is usually not a readily available source of energy for ...
【判断题】An AC/DC converter (rectifier) is not the most typical power electronics device in many consumer electronic devices.
【简答题】昨日はいい天気でした 。 今日は雨です 。
【单选题】Vocabulary and Structure: Power electronics is the application of for the control and conversion of electric power.
B.
solid-state electronics
【简答题】The capabilities and economy ofpower electronics system are determined by the that are available.