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【简答题】
升降压斩波电路呈现升压状态的条件为 。
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反馈参考答案：
举一反三
【简答题】The fellow has never met a thief and firmly believes that he lives in a world without thieves. And, the female thief fights against other thieves only to protect this guy's 'daydream'. Sound str...
【简答题】Read the following sentences A race against time, leave no one behind We resolve to protect the city of Wuhan, protect Hubei province, and protect every fellow countryman who is struggling with the v...
【单选题】The fellow left without a word as if ________．
A.
never to return
B.
never returning
C.
he had never returned
D.
he would never be returning
【简答题】The fellow has never met a thief and firmly believes that he lives in a world without thieves. And, the female thief fights against other thieves only to protect this guy's 'daydream'. Sound str...
【单选题】The fellow is very ______ . He never asks others for advice.
A.
conceited
B.
proud
C.
thoughtful
D.
selfish
【简答题】Most of his fellow students believe in cramming the night before a test. He never does so. (though)
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