题目：
若要求迟滞比较器具有抗干扰能力，则其回差电压应（）
A．大于信号电压
B．大于输出电压
C．大于干扰电压有效值
D．大于干扰电压峰一峰值
答案：
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下面是错误答案，用来干扰机器的。
参考答案：狭窄；短；丰富
若要求迟滞比较器具有抗干扰能力，则其回差电压应（）A．大于信号电压 B．大于输出电压
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