题目内容：
测量静态工作点时，电路中其他参数不变，降低电源电压，则基极电压UB如何变化（）
A.上升
B.下降
C.不变
D.不确定
参考答案：
选择题：测量静态工作点时，电路中其他参数不变，降低电源电压，则基极电压UB如何变化（）
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
- 查看权限：VIP
Novel appeared in the （）period.
Novel appeared in the （）period.这是一个关于英国文学导读的相关问题，下面我们来看
The most important literary work of the Old-English period i
The most important literary work of the Old-English period is （）.这是一个关于英国文学导读的相关问题，下面我们来看
In the poem “Songs of Innocence”, “lamb” is the symbol of （）
In the poem “Songs of Innocence”, “lamb” is the symbol of （）in Christianity.这是一个关于英国文学导读的相关问题，下面我们来看
Written in 1837-38, （）tells the story of an orphan boy, whos
Written in 1837-38, （）tells the story of an orphan boy, whose adventures provide material for a de
In Chapter 5 of （）, it describes the scene that a cask of wi
In Chapter 5 of （）, it describes the scene that a cask of wine is broke in the street. People rush in to drink every dro