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对于PLC，内部标志位（）可以按位使用，作为控制继电器（又称中间继电器），用来存储中间操作数或其他控制信息。
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对于PLC，内部标志位（）可以按位使用，作为控制继电器（又称中间继电器），用来存储中间操作数或其他控制信息。
A、用M表示
B、用I表示
C、用Q表示
时间：2022-04-19 21:41
关键词：
CMS专题
专科
机械制造与自动化
国家开放大学(数控机床电气控制)
答案解析
A
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