问题
单项选择题
图示电路中，已知：U1=U2=12V，R1=R2=4kΩ，R3=16kΩ。S断开后A点电位VAO和s闭合后A点电位
分别是（）。
A.-4V，3.6V
B.-4V.2.4V
C.4V，-2.4V
D.6V，0V
答案
参考答案：B
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图示电路中，已知：U1=U2=12V，R1=R2=4kΩ，R3=16kΩ。S断开后A点电位VAO和s闭合后A点电位分别是（）。
A.-4V，3.6V
B.-4V.2.4V
C.4V，-2.4V
D.6V，0V
参考答案：B
| 根据上下文填空，将正确答案序号填在前面括号里。 |
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