【判断题】PLC基本指令ANB称为“电路块或指令”,其功能是使电路块与电路块并联。()
【简答题】ANB指令是电路块与指令,ORB是电路块或指令,与and、or指令()
【判断题】O和ON是用于将单个触点与上面的触点(或电路块)串联连接的指令。
【单选题】某产品学习率为 80%,生产第一件产品消耗工时10h,那么生产到第三件产品时消耗工时为()
【简答题】阅读理解。 When I was nine years old I lived in a small town. I found an ad for selling greeting cards in the back of a children's magazine. I thought to myself I could do this. I begged my mother to let m...
【单选题】在高温和发热中强烈脱水,从而质变干硬,并可生霉和遭受虫蛀的中药是
【简答题】ANB指令是(),ORB是电路块或指令,与and、or指令不同
【单选题】— Must I go to the shop with you, Mum? — Err...I can make it myself, Mike. You go with me. [ ]