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【简答题】
硅三极管发射结的死区电压约为 V ,锗三极管发射结的死区电压约为 V ,晶体三极管处于正常放大状态时,硅三极管发射结导通电压约为 V ,锗三极管发射结导通电压约为 V 。
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参考答案:
举一反三
【判断题】Ex. 3 Decide whether the following statements are true (T) or false (F) according to the passage. Paul Wylie had no idea that the applause was for him when he stepped off the plane because he didn’t t...
A.
正确
B.
错误
【简答题】We think _____ a pity that he didn’t pass the driving test.
【单选题】While I       that he is an excellent leader, I didn’t think he can do a good job in this company because he is too rigoro us.
A.
summarize
B.
reflect
C.
acknowledge
D.
recommend
【简答题】When I was a little girl, my father loved to play catch(接球) with me. I wasn’t very good at it, 16 we would play anyway. He was always telling me “Keep your eye on the ball” as I would not be able to c...
【单选题】总效用曲线达到顶点时( )
A.
边际效用达到最大值
B.
边际效用为零
C.
边际效用为正
D.
边际效用为负
【简答题】The ability to laugh at your own weaknesses and blunders has long been recognized as a sign of maturity. And yet this is one of the most difficult __1__ of your sense of humor to develop. Oscar Wilde ...
【单选题】总效用曲线达到顶点时( )
A.
边际效用曲线达到最大点
B.
边际效用为零
C.
边际效用为正
D.
不一定
【简答题】Erik was a four-year-old boy. He thought he was a young man but his parents didn’t think so. They told him, “When you begin to think about 1 others, you’ll be a young man.” One morning, his parent...
【多选题】根据主体所得经验的来源分类,学习分为( )。
A.
意义学习
B.
接受学习
C.
机械学习
D.
发现学习
E.
内隐学习
F.
外显学习
【单选题】He insisted that he suffer from heart trouble, but I didn’t think so.
A.
should suffer
B.
has suffered
C.
suffers
D.
was suffering
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