题目内容

为提高平板变面积式电容传感器的灵敏度，可以采取哪些措施（）

A. 应减小极间间隙d，但受电容器击穿电压的限制。
B. 加云母层后，可以大大减小极距，增大初始电容值，提高灵敏度。
C. 增大电容传感器初始正对面积
D. 采用差动结构，可以改善线性度，并不能提高灵敏度。

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如何改善变极距式电容传感器的非线性（）

A. 应减小极间间隙d，但受电容器击穿电压的限制
B. 加云母层后，可以大大减小极距
C. 增大极间间距d
D. 采用差动结构

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