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问题详情

FX系列PLC中PLF,表示什么指令 ( )

A、下降沿

B、上升沿

C、输入有效

D、输出有效

时间：2021-09-01 17:02 关键词：青书学堂平顶山学院电气自动化技术可编程控制器桂林理工大学机电一体化技术高起专可编程控制器原理及应用

答案解析

A

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