【单选题】【消耗次数:1】
利用二极管的( )可以交流电将变成直流电。
放大特性
稳压特性
单向导电性
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相关题目
【判断题】 半导体二极管的特性为单向导电性。
①  正确
②  错误
【判断题】 二极管是根据PN结单向导电的特性制成的,因此二极管也具有单向导电性。
①  正确
②  错误
【单选题】 利用二极管的( )组成整流电路。
①  正向特性
②  单向导电性
③  反向击穿特性
【简答题】 将交流电变成直流电的过程称作[填空]
【判断题】 整流电路的任务是将交流电变成脉动直流电。
①  正确
②  错误
【单选题】 二极管外加电压VD=0.6V,流过二极管电流为120mA,则二极管的正向直流电阻RD是( )。
①  15Ω
② 
③  20Ω
【判断题】 半导体二极管的主要特点是具有单向导电性,在电路中可以起整流和检波等作用。
①  正确
②  错误
【判断题】 滤波电路的任务是将交流电变成脉动直流电。
①  正确
②  错误
【判断题】 起动机换向器的作用是将交流电变成直流电。()
①  正确
②  错误
【判断题】 交流电的瞬时电压使二极管正极电位高于负极电位时就导通。()
①  正确
②  错误
随机题目
【单选题】 The first American writer of local color to achieve wide popularity was?____.
①  Bret Harte
②  Mark Twain
③  Henry James
④  William Dean Howells
【单选题】 Mark Twain, one of the greatest 19th century American writers, is well known for his ______.
①  international theme
②  waste-land imagery
③  local colorism
④  symbolism
【单选题】 Who exerts the single most important influence on literary naturalism, of which Theodore Dreiser and Jack London are among the best representative writers?
①  Freud
②  Darwin
③  W. D. Howells
④  Emerson
【单选题】 _____ had an evident influence on naturalism. It seemed to stress the animality of man, to suggest that he was dominated by the irresistible forces of evolution.
①  Transcendentalism
②  Darwinism
③  Marxism
④  Freudianism
【单选题】 As a realist, Mark Twain concerned particularly about the local character of a region, which came about as “_________”.
①  Naturalism
②  Transcendentalism
③  Local Colorism
④  Both A and C
【单选题】 ______ is not the representative writer in the Age of Realism in the literary history of the United States.
①  Henry James
②  Ezra Pound
③  William Dean Howells
④  Mark Twain
【单选题】 Which of the following is not right about Mark Twain’s writing style?
①  ungrammatical and complicated
②  colloquial and concrete
③  remarkable humor
④  deep influence on contemporary writers
【单选题】 After the Civil War America was transformed from ______ to ______.
①  an agrarian community … an industrialized and commercialized society
②  an agrarian community … a society of freedom and equality
③  a poor and backward society … an industrialized and commercialized society
④  an industrialized and commercialized society … a highly developed society
【单选题】 Which of the following is NOT right about Mark Twains style of language?
①  His sentence structures are long, ungrammatical and difficult to read.
②  His words are colloquial, concrete and direct in effect.
③  His humor is remarkable and characterized by puns, straight-faced exaggeration, repetition and anti-climax.
④  His style of language had exerted rather deep influence on the contemporary writers.
【判断题】 The Transcendentalist group includes two of the most significant writers America has produced so far, Emerson and Henry David Thoreau.
①  正确
②  错误