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Time relays can be divided into AC relays and DC relays according to different power supply requirements, which are respectively used in AC circuits and DC circuits. Time relays can be divided into power-on delay relays and power-off delay relays according to different functions. Time relays can be divided into sealed relays, small relays and micro relays according to their shapes. In addition to the above classification of time relays, time relays also include special types of relays such as resonant relays, stepping relays, proportional relays, etc.Official website: AI-CPS.NET伯明翰警察迪·拉希塔·雷（DiRachitaRay）接手了一个迫使她终身面临个人冲突的案件。3. Psh and ack flood attack中堂系虽然拥有着丰富的临床经验，个性却乖僻古怪，对正义和法律理解不同的美琴和中堂之间，常常产生无法调和的矛盾。其实，中堂有一个无人知晓的秘密，他的女友在一场“意外”中不幸丧生，可种种蛛丝马迹向中堂揭示了，是一名连环杀人犯取走了女友的性命。中堂不畏人言坚定的留在UDI，正是为了找到杀死女友的凶手。剧集讲述了秦始皇嬴政在吕不韦、李斯、王翦等的辅佐下平灭六国、一统天下，建立起中华历史上第一个大一统的中央集权国家的故事。