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【单选题】
在最基本的共发射极放大电路中,已知电源电压UCC=12V,基极电阻RB=300kΩ,集电极电阻Rc=3KΩ,晶体管的β=50。发射极与集电极电压Uce=()V。A.
2
B.
3
C.
5
D.
6
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反馈参考答案：
举一反三
【单选题】The girl ______in red is a successful writer, who _______ Tom last month.
A.
dressed; got married with
B.
dressing; married to
C.
dressing; was married to
D.
dressed; married
【单选题】听力原文：How long can we feel acceleration? (14)
A.
For only a short time.
B.
For a long time.
C.
For all our life.
D.
For half a day.
【单选题】They said," We've lived here for a long time."
A.
They said they have lived theere for a long time.
B.
They said they lived here for a long time.
C.
They said they had lived there for a long time.
【单选题】— I need something for cutting the paper. — Oh, you want a knife? OK, I'll get ____ for you. A. it B. that C. this D. one
A.
1
B.
2
C.
3
D.
4
【单选题】为体温过低病人采取保暖措施时,首先应:
A.
给予热饮料使病人感觉舒适
B.
加盖被保温
C.
多加衣服保暖
D.
足部放置热水袋提高体 温
E.
应用空调使病室温度提高至24～26oC
【单选题】为体温过低病人采取保暖措施时首先应
A.
给予热饮料使病人感觉舒适且
B.
加盖被保温
C.
多加衣服保暖
D.
足部放置热水袋提高体温
E.
应用空调使病室温度提高至24~26*C
【简答题】having lived for a long time
【单选题】Men who were widowed had a survival rate as low as those who had never been married.
A.
Right
B.
Wrong
C.
Not mentioned
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