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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.嘿嘿，马氏妖媚地笑道：没出息的主，喜欢人家就直说嘛。原本家庭美满生活幸福的人妻Tiffany在自己家中遭遇匪徒，匪徒以Tiffany的丈夫被绑架的视频要求Tiffany与之假扮168小时夫妻， Tiffany却在与歹徒斗智斗勇，努力寻找解救丈夫线索的过程中发现了很多自己从来都不知道的往事和真相……侄儿啊，你的事，我也听说了。就是一群年轻人battle街舞的故事呀本剧由BeeS和NamfonK主演，是这对经典官配的第三度合作。剧中不仅有你从未见过的“中二戏精”款男主和时而柔弱时而战斗力满点的女主，更有大名鼎鼎、不容错过的“胶带吻”约翰·哈蒙以前是中央情报局/缉毒局特工。一日，缉毒局的贝克找到约翰，告诉他：半岛基地组织恐怖分子阿卜杜拉在墨西哥边境偷渡被捕，调查发现，伊斯兰恐怖团伙将利用墨西哥何塞·里维拉的贩毒走私路线，输送恐怖武器及人员进入美国。因此，贝克让约翰复出，组织人员阻止破坏二者的结盟。约翰同意复出，但提出任用他自己的人及设备。