EMIS可编程控制器CPU模块三个指示灯是:()。
第1题:
对于西门子S7-300系列PLC系统 ,CPU模块上指示灯( )亮表示 CPU 处于运行状态。
A、SF
B、DC5V
C、RUN
第2题:
The term “moderate speed” was previously interpreted as meaning a speed which would enable a vessel ______ within half the range of visibility.
A.stopping
B.being stopped
C.to stop
D.to be stopped
第3题:
A、程序错误
B、CPU模块上
C、输入线路上
D、输出线路上
第4题:
EMIS可编程控制器CPU模块三个指示灯是:()。
第5题:
第6题:
对于西门子S7-300系列PLC系统,CPU模块上指示灯()亮表示硬件或软件错误。
A、SF
B、DC6V
C、RUN
第7题:
The term "moderate speed" was previously interpreted(解释) as meaning a speed which would enable a vessel ______within half the range of visibility.
A.stopping
B.being stopped
C.to stop
D.to be stopped
第8题:
A、程序出错
B、电压低
C、输入模块故障
D、输出模块故障
第9题:
s7-200PLC可编程控制器指示灯有:()。
第10题:
淡水过滤器的可编程控器上有许多指示灯,()程序工作指示灯,绿色指示正常运行