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【习题2-28】为了增强放大电路的带负载能力,用射极输出器作为输出级,如图所示。 (1)画出放大电路的微变等效电路; (2)求放大电路的输入电阻 和输出电阻 ; (3)空载情况下的电压放大倍数 ; (4)接有负载 时的电压放大倍数 。
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举一反三
【单选题】可预防心身疾病的措施不包括（ ）。
A.
养成健康的行为习惯和生活方式
B.
减少负性情绪对健康的不良影响
C.
正确认识各种生活事件
D.
多参加社会活动
E.
劳逸结合不超负荷工作
【简答题】_____
is human nature that a great many people are often willing to sacrifice higher pay for the privilege of becoming white-collar workers.A. That B. Such C. What D. Which
【单选题】_______ is human nature that a great many people are often willing to sacrifice higher pay for the privilege of becoming white-collar workers.
A.
That
B.
Such
C.
What
D.
Which
【判断题】Such is human nature in the west that a great many people are often willing to sacrifice higher pay for the privilege of becoming white collar workers. 汉译这句话时不需要调整语序。
A.
正确
B.
错误
【单选题】___is the human nature, that a great many people are often willing to sacrifice higher pay for the privilege of becoming white-collar workers.
A.
So
B.
This
C.
Such
D.
What
【单选题】可预防心身疾病的措施不包括
A.
减少负性情绪对健康的不良影响
B.
正确认识各种生活事件
C.
养成健康的行为习惯和生活方式
D.
长期投入地工作
E.
劳逸结合不超负荷工作
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