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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.在发现自己有姓病后，迪伦必须和每一个和他发生过姓关系的女孩联系，让他们知道这个坏消息。田遥不敢相信地质问：半个时辰？你们为什么不早些叫我？明心愣住。庞取义也真是撞上了，大军刚刚讨贼归来，又遇见了更多的贼。5 Signal for left turn to be turned: the left arm extends horizontally to the left to 45 degrees and swings up and down;/rdy (Ready)一场突如其来的紧急任务，上级将护航编队的军医张渡航火速调上了海军医疗船“和平方舟”。执行任务时，张渡航和女军医路子昂因医学理念不同导致水火不容。张渡航瞧不上过分理智冷静的路子昂，而路子昂也看不上出身“野路子”的张渡航。阴错阳差间，两人竟调到了一个部门，不得不硬着头皮处理各种紧急任务；商船遇险、跨国救灾、抗击病毒、海外反恐…在血与火的考验中，两人出生入死，献身使命，两颗心也越走越近，与“和平方舟”一起，为大力弘扬人道主义精神，广泛传播了“和谐世界、和谐海洋”理念，谱写了一曲当代中国海军的英雄赞歌。