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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.南宋末年，小白为救许仙水漫金山，终被法海压在雷峰塔下。小青则意外被法海打入诡异的修罗城幻境。几次危机中小青被神秘蒙面少年所救，小青带着出去救出小白的执念历经劫难与成长，同蒙面少年一起寻找离开的办法。一九四四年，雾，重庆。日本已停止了对重庆的轰炸，但“重庆大轰炸”的噩梦，留在人们心中的阴影仍然挥之不去。小公务员魏端本原在南京政府某部供职，抗战爆发后辗转撤退到重庆。路上遇到同是难的女孩子田佩芝。同是天涯沦落，发生了感情，结成患难夫妻。这已经是六七年前的事了。如今，他们已有了一对儿女。一家人挤住在一家杂货店的后屋。这是重庆彼时特有的“吊脚楼”--依山崖而建，从顶层出入，成年见不到一丝阳光。电视剧《掩不住的阳光》承袭原著精髓，描述了方志敏同志率领的北上抗日先遣队遭国民党围追堵截，弹尽粮绝，方志敏、赵天明等人不幸被捕，狱中同志在方志敏领导下成立秘密党支部，方志敏就义后大家坚守信仰遵其遗志，继续在错综复杂的监狱环境下开展狱中斗争，最后在党组织营救下走出牢房，投入到抗日战争新战场的故事。北上抗日先遣队作为红军长征的先锋部队，拉开了长征的序曲。　　【高媛熙】饰演两班家的贵族小姐，是个坦坦荡荡勇于开拓的"新女性"。这样的时刻肯定是令人开心的，大伙捞鱼、烤鱼、吃鱼，直闹到月上中天。KBS时隔5年复活大河古装剧《太宗李芳远》。此剧是正统古装剧,以朝鲜建国为题材,讲述了李芳远建造朝鲜的故事。