【单选题】【消耗次数：1】
PLC的输人和输出量有开关量和模拟量两种。开关量I/ 0用最大I/ 0点数表示，模拟量I/ 0点数用最大I / 0通道数表示。（ )
①
正确
②
错误
参考答案：
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相关题目
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