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张富仿佛明白他的心思，有些尴尬地说道：不是黎章，是……是大家。Time relays are divided into two types: on-time delay type and off-time delay type, and their symbols are shown in the following figure. For the power-on delay type time relay, when the coil is powered on, the power-on delay type contact acts after the delay time (the normally closed contact is opened and the normally open contact is closed), and the contact immediately returns to normal after the coil is powered off; For the power-off delay type time relay, when the coil is powered on, the power-off delay type contact acts immediately (the normally closed contact is opened and the normally open contact is closed). After the coil is powered off, the contact will not return to normal until the delay time is passed.大夫奇怪地问道：你不去？黎章不理他，依旧握着老将军的手。一个嫉妒的妻子绑架了她的欺骗丈夫和他的年轻秘书，并把他们作为人质在一个孤立的房子在沙漠;但离婚是她从未想过的事。徐风拉住他，乖乖下了台阶。After checking the environment, Redis has been started, and the port is correct, and the address and port of the program connection are also correct. It can be considered that it is not a personal problem, so where did the mistake come from?The fourth stage: pioneering and innovating//250