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【简答题】
在图所示的理想运算放大器组成的电路中,已知电路最大的输出电压为±15V,R 2 =200kΩ,R w =5kΩ,R 1 =100kΩ,U 1 =2V。求在下述三种情况下,U O 各为多少
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参考答案:
举一反三
【简答题】What we find is that society has an impact ____ science and can readily mold the direction in which science takes.
【单选题】Looking all around the world, what we find everywhere is ________.
A.
the same ideas about what is right
B.
people enjoying the same sports
C.
people creating diverse cultural systems
D.
the same standards that define what is beautiful and ugly
【单选题】一平面简谐波表达式为 【图片】(SI),则该波的频率 【图片】 (Hz),波速 【图片】 (m/s)及波线上各点振动的振幅 【图片】 (m)依次为( )
A.
0.5, 0.5, -0.05
B.
0.5, 1, -0.05
C.
0.5, 0.5, 0.05
D.
2, 2, 0.05
【简答题】电路中任一闭合路径称为
【单选题】What we find is that society has an impact ______________science and can readily mold the direction in which science takes.
A.
on
B.
with
C.
in
D.
over
【判断题】假设已使用import matplotlib.pyplot as plt导入扩展库,那么语句ax2 = plt.subplot(222, projection='polar')执行之后,ax2表示画布右上角的子图,并且在该子图中可以绘制极坐标图。
A.
正确
B.
错误
【简答题】Read the sentence. Find the part of the sentence which is emphasized. What we should remember is that the participants in the study might not be representative.
【单选题】一平面简谐波的表达式为y=0.1cos(3πt–πx+π) (SI制),t = 0时的波形曲线如图所示,则【图片】
A.
a 、 b 两点间相位差为 π/2
B.
O 点的振幅为 - 0.1 m
C.
波长为 3 m
D.
波速为9m/s
【判断题】假设已使用import matplotlib.pyplot as plt导入扩展库,那么语句ax2 = plt.subplot(222, projection='polar')执行之后,ax2表示画布右上角的子图,并且在该子图中可以绘制极坐标图。
A.
正确
B.
错误
【简答题】What we find is that a particular set of traits turns out to be ( ) who is going to become an entrepreneur later in life.
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