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(3) Power on the control coil to detect the contacts. Apply rated voltage to the control coil of the time relay, and then detect whether the contact state changes according to the type of the time relay. For example, for the energized time delay type time relay, after the energized time delay, whether the delayed open contact is closed (the resistance is close to 0) and whether the delayed closed contact is opened (the resistance is infinite).Ha Xuesheng, director of the program department of CCTV's financial channel, believes that cultural media, charming cities and industrial capital are the three carriages of the alliance and are indispensable. The "Charming China City-City Alliance" is first a resource platform for the cultural and tourism industry, forming an ecological circle of resource sharing under the framework of "media + city + industry". Secondly, according to the needs of the city, it provides support, assistance and services for strategic planning and tactical guidance in the aspects of city brand building, city image publicity, city cultural tourism resources development, and research and development of innovative and creative products in the city cultural tourism industry. Third, it is an open platform for the exchange of cultural and tourism industries. It is also a platform for the exchange of experiences, industrial cooperation and exchange of needs between cities inside and outside the alliance. Fourth, it is the operating platform of "all-in-one card".北京大学的高材生唐浩与外语系韩语专业的漂亮女生李嘉影真心相爱，因出身贫困课外努力打工，减少家庭负担，共同的命运和共同的追求使两个年轻人心心相印。唐浩的同学东民出身富裕家庭，总拿唐浩当仆人使唤，这天他又让唐浩给他当司机去参加“新亚集团”董事长女儿周兰的主题派对。酒店里灯红酒绿，唐浩坐在车里却饥肠辘辘，嘉影来给唐浩送饭，却被周兰的车撞伤，周兰无心纠缠扔下一摞钱急欲离开，唐浩却将钱摔回周兰脸上，要求她向嘉影道歉。周兰第一次遇到敢跟自己叫板的人，发誓要好好教训这个穷小子。刚才，他感觉红鸾对他起了一丝杀心，不知为何，又放手了该剧主要讲述从身任警方卧底成功捣毁黑帮后重返警局的警员高家声（林峯饰）、PTU女沙展何慧玲（蔡卓妍饰）和铁面无私的队长刘建晖（方中信饰）为主人公进行展开的故事。三人在PTU虽然有误会、矛盾与冲突，但在执行任务、面对瞬间生死后，逐渐建立起真正的同僚友谊，成为了真正的好警察。花生和玉米高兴极了，连声道：要。陈平当做什么都没说，立即话锋一转道：高易啊，此事可是有些耐人询问的，你说徐明前来找你表示要归附大王，又要献上女儿给大王。