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In the in-depth learning competition, I often look for relevant papers and try to find out the solving skills adopted by the author in similar situations.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.　　失踪三年的大少爷沈书豪忽然回归，力挽狂澜，帮有名无实的妻子尚婉婷洗脱了嫌疑，粉碎了堂兄沈悦篡夺家产的阴谋，隐忍多年的沈悦不甘屈居人下，风流倜傥的外表难掩他野心勃勃的内心。然而，阻挡沈悦的并不是真正的沈书豪，他的名字叫周定一。就这样本来尚且可以一战的赵国大军彻底地乱了……一时间赵王歇和陈余等人下落不明，李左车接到营寨被汉军攻陷的消息，赵王下落不明时，一腔热血陡然间凉了下来。60. X.X.211The disadvantage of state mode is that many state classes will be defined in the system. Writing 20 state classes is a boring job, and many objects will be added to the system. In addition, because the logic is scattered in the state class, although unpopular conditional branch statements are avoided, it also causes the problem of logic dispersion, and the logic of the entire state machine cannot be seen in one place.What makes a woman swipe right for Mr. Wrong? Sofía Vergara and Whitney Cummings star in this fresh, witty look at the science behind our romantic missteps.@