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【单选题】
工作在放大状态的某三极管,当输入电流IB=10μA时,IC=1mA;而IB=20μA时,IC=1.8mA,则该三极管的交流电流放大系数为( )
A.
50
B.
80
C.
100
D.
180
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参考答案：
举一反三
【单选题】It’s ___ time that he has failed in the experiment.However, he has made up his mind to try ___ time next week.
A.
the first…a second
B.
a first.. the second
C.
for the first.. second
D.
the first..second
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【简答题】What measure has William Bosh taken to solve the problem? He has made many arrangements to complete the______ by next weekend.
查看完整题目与答案
【判断题】家庭生活周期各阶段都面临的有主要家庭问题,如能够顺利的适应家庭的发展任务,就有利于家庭的正常发展。
A.
正确
B.
错误
查看完整题目与答案
【判断题】深入供应商调查适用于企业所有供应商。
A.
正确
B.
错误
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【单选题】This is Mary. She is a good friend of ______.
A.
me
B.
mine
C.
my
D.
I
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【单选题】在Windows2000中,当桌面上有多个窗口时,( )是当前窗口。
A.
可以有多个窗口
B.
只有一个固定窗口
C.
被其它窗口盖住的窗口
D.
一个标题栏的颜色与众不同的窗口
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【单选题】______ is a well-informed man. He can tell you anything you want to know. A. This John’s old friend C. That’s Jahn’s old friend B. This old friend of John D. This old friend of John’s
A.
选择1
B.
选择2
C.
选择3
D.
选择4
查看完整题目与答案
【单选题】直线在三视图的投影,其中在一个视图中的投影为直线,则在另两个视图中的投影为( )。
A.
一定是直线
B.
一定是点
C.
一定是点和直线
D.
无法确定
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【简答题】I have an American friend．Her name is Lily．This is a picture of her new school．Look! There are six floors（层）in the teaching building．There are fif classrooms on every floor．In the school，there are...
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【简答题】Since he is usually a cautious person, this sudden promise he has made regarding the investment is ______. (question)
查看完整题目与答案
相关题目：
【单选题】It’s ___ time that he has failed in the experiment.However, he has made up his mind to try ___ time next week.
A.
the first…a second
B.
a first.. the second
C.
for the first.. second
D.
the first..second
查看完整题目与答案
【简答题】What measure has William Bosh taken to solve the problem? He has made many arrangements to complete the______ by next weekend.
查看完整题目与答案
【判断题】家庭生活周期各阶段都面临的有主要家庭问题,如能够顺利的适应家庭的发展任务,就有利于家庭的正常发展。
A.
正确
B.
错误
查看完整题目与答案
【判断题】深入供应商调查适用于企业所有供应商。
A.
正确
B.
错误
查看完整题目与答案
【单选题】This is Mary. She is a good friend of ______.
A.
me
B.
mine
C.
my
D.
I
查看完整题目与答案
【单选题】在Windows2000中,当桌面上有多个窗口时,( )是当前窗口。
A.
可以有多个窗口
B.
只有一个固定窗口
C.
被其它窗口盖住的窗口
D.
一个标题栏的颜色与众不同的窗口
查看完整题目与答案
【单选题】______ is a well-informed man. He can tell you anything you want to know. A. This John’s old friend C. That’s Jahn’s old friend B. This old friend of John D. This old friend of John’s
A.
选择1
B.
选择2
C.
选择3
D.
选择4
查看完整题目与答案
【单选题】直线在三视图的投影,其中在一个视图中的投影为直线,则在另两个视图中的投影为( )。
A.
一定是直线
B.
一定是点
C.
一定是点和直线
D.
无法确定
查看完整题目与答案
【简答题】I have an American friend．Her name is Lily．This is a picture of her new school．Look! There are six floors（层）in the teaching building．There are fif classrooms on every floor．In the school，there are...
查看完整题目与答案
【简答题】Since he is usually a cautious person, this sudden promise he has made regarding the investment is ______. (question)
查看完整题目与答案
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