皮皮学，免费搜题
登录
搜题
【单选题】
一个由NPN型硅管组成的共发射极基本放大电路,若输入电压Vi的波形为正弦波,而用示波器观察到输出电压的波形如图2-38所示,那是因为 。
A.
Ic 电流合适，vi过大产生的失真
B.
Ic 偏低引起的截止失真
C.
Ic偏大引起的饱和失真
D.
电源电压偏高出现的截止失真
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】思维导图的特点是
A.
可视化
B.
放射性思维
C.
对人脑的模拟
D.
以上都
查看完整题目与答案
【单选题】思维导图的特点是
A.
可视化
B.
放射性思维
C.
对人脑的模拟
D.
以上都是
查看完整题目与答案
【多选题】思维导图的特点( )。
A.
可视化
B.
放射性思维
C.
对人脑的模拟
查看完整题目与答案
【多选题】思维导图的特点有
A.
注意的焦点清晰地集中在中央图形上
B.
主题的主干作为分支从中央向四周放射
C.
分支由一个关键的图形或者写在产生联想的线条上面的关键词构成
D.
各分支形成一个连接的节点结构
查看完整题目与答案
【单选题】A city councilman has proposed a controversial new plan to increase city revenues from the parking places downtown. He has proposed that instead of charging $1.20 per hour for parking in these spots, ...
A.
A system that promotes parking fines will anger citizens, and they will consequently vote the councilman out of office if the plan goes through.
B.
The city owns only 14 parking spots in the downtown area.
C.
The costs of assessing and collecting the parking fines will surpass the revenues likely to be collected from the new plan.
D.
Ray's parking garage, the only competition for the city-owned parking places downtown, charges $18 per day for its parking places.
E.
It has been observed that on an average day, approximately three different cars park in each of the city-owned parking spots downtown.
查看完整题目与答案
【判断题】If business goes well, the cost of operation exceed the revenues from sales and the company realizes a profit.()
A.
正确
B.
错误
查看完整题目与答案
【单选题】Revenues from oil are the biggest single ______ in the country's income.
A.
company
B.
companion
C.
component
D.
compound
查看完整题目与答案
【单选题】It may be inferred from the passage that______.
A.
many of the opponents of seat belt installation are parents and federal officials
B.
proposals of seat belts on school buses would be seriously considered
C.
the idea of raising seat backs four inches will be taken into consideration
D.
the government will carry out the idea of installing seat belts on all school buses
查看完整题目与答案
【简答题】For some students, what could these part-time jobs lead to?
查看完整题目与答案
【单选题】While newspaper offices and TV stations gain revenues from advertising,readers and viewer______.
A.
can do nothing about it
B.
blame it on advertisers
C.
gain benefits from it
D.
suffer a loss from paying for it
查看完整题目与答案
相关题目：
【单选题】思维导图的特点是
A.
可视化
B.
放射性思维
C.
对人脑的模拟
D.
以上都
查看完整题目与答案
【单选题】思维导图的特点是
A.
可视化
B.
放射性思维
C.
对人脑的模拟
D.
以上都是
查看完整题目与答案
【多选题】思维导图的特点( )。
A.
可视化
B.
放射性思维
C.
对人脑的模拟
查看完整题目与答案
【多选题】思维导图的特点有
A.
注意的焦点清晰地集中在中央图形上
B.
主题的主干作为分支从中央向四周放射
C.
分支由一个关键的图形或者写在产生联想的线条上面的关键词构成
D.
各分支形成一个连接的节点结构
查看完整题目与答案
【单选题】A city councilman has proposed a controversial new plan to increase city revenues from the parking places downtown. He has proposed that instead of charging $1.20 per hour for parking in these spots, ...
A.
A system that promotes parking fines will anger citizens, and they will consequently vote the councilman out of office if the plan goes through.
B.
The city owns only 14 parking spots in the downtown area.
C.
The costs of assessing and collecting the parking fines will surpass the revenues likely to be collected from the new plan.
D.
Ray's parking garage, the only competition for the city-owned parking places downtown, charges $18 per day for its parking places.
E.
It has been observed that on an average day, approximately three different cars park in each of the city-owned parking spots downtown.
查看完整题目与答案
【判断题】If business goes well, the cost of operation exceed the revenues from sales and the company realizes a profit.()
A.
正确
B.
错误
查看完整题目与答案
【单选题】Revenues from oil are the biggest single ______ in the country's income.
A.
company
B.
companion
C.
component
D.
compound
查看完整题目与答案
【单选题】It may be inferred from the passage that______.
A.
many of the opponents of seat belt installation are parents and federal officials
B.
proposals of seat belts on school buses would be seriously considered
C.
the idea of raising seat backs four inches will be taken into consideration
D.
the government will carry out the idea of installing seat belts on all school buses
查看完整题目与答案
【简答题】For some students, what could these part-time jobs lead to?
查看完整题目与答案
【单选题】While newspaper offices and TV stations gain revenues from advertising,readers and viewer______.
A.
can do nothing about it
B.
blame it on advertisers
C.
gain benefits from it
D.
suffer a loss from paying for it
查看完整题目与答案