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【单选题】
晶体管工作在饱和区时:A.
发射结正偏、集电结反偏
B.
发射结反偏、集电结正偏
C.
发射结、集电结均正偏
D.
发射结、集电结均反偏
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【简答题】Why did Johnstone get 8job in Sydney? [A]Thejob could help him fly round Australia． [B] Hewanted to save money for his wedding． [C]Thejob there was easy and well-paid． [D]Heneeded the money to see Dol...
【简答题】I don't think we can ______ finish thejob. It is ______ at all. (possible)
【单选题】I. Choose the correct words to complete the sentences. _________ you like a cake?
A.
Would
B.
Can
【单选题】Mention your name and address _______of thejob acceptanceletter.
A.
in the middle
B.
at the top
C.
at the bottom
D.
everywhere
【单选题】下面的文件在网络上不可以播放的视频文件是()
A.
以.mpg为扩展名的文件
B.
以.avi为扩展名的文件
C.
以.ra为扩展名的文件
D.
以.gif为扩展名的文件
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