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【单选题】
三极管的集电结反偏,发射结正偏时,三极管处于( )。A.
饱和状态
B.
截止状态
C.
放大状态
D.
开关状态
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举一反三
【简答题】Please fill in the blanks with the articles: a an the x (zero 0冠词). I like the blue T-shirt over there better than ___ red one.
【判断题】Comparatively speaking, the U.S. education is more idealistic. They adopt liberal education that requires students to think independently and promote general education.()
A.
正确
B.
错误
【单选题】— Who ’ s that speaking? — .
A.
This is Dick speaking
B.
I am speaking
C.
Dick is me
D.
I am Dick
【简答题】Fill in the blanks with the words below. Change the form where necessary. tedious oblige absorbed allergic excursion earnest exclaim civilization capture condens...
【单选题】What can be inferred about the woman who' s speaking?
A.
She' s studying British culture.
B.
She' s wearing a black sweater.
C.
She sometimes misplaces things.
D.
She works in the library.
【简答题】Fill in the blanks withe the proper forms of the words in the brackets. T he USA, especially its northeast, is known as the “melting pot,” the ______ ( fuse ) of people from many countries into Americ...
【简答题】Fill in the blanks with words and phrases from the the word bank using their correct forms. 8. The prices of t hese books ______10 to 50 dollars.
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