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【单选题】
实际电路常常受电网电压的波动影响,必须采用( )措施,以保证负载两端电压基本不变。A.
变压
B.
整流
C.
滤波
D.
稳压
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反馈参考答案：
举一反三
【多选题】When we need to make a point on the surface of a solid, on which of the following solid the auxiliary latitude circle method can be used?
A.
Prism
B.
Pyramid
C.
Cylinder
D.
Cone
E.
Sphere
F.
Any revolved solid
【单选题】At which labeled point on the action potential is K+ closest to electrochemical equilibrium?
A.
①
B.
②
C.
③
D.
④
E.
⑤
【单选题】An indifference curve is drawn on a graph with good X on the horizontal axis and good Y on the vertical axis. One point on the curve is X = 5, Y = 5. Which of the following points CANNOT also be on ...
A.
X = 6, Y = 6
B.
X = 6, Y = 4
C.
X = 9, Y = 4
D.
X = 2, Y = 11
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