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IGMP means Internet Group Management Protocol. This protocol is used to establish and maintain multicast group membership between IP host and its directly adjacent multicast routers, but does not include the dissemination and maintenance of group membership information between multicast routers. This part of the work is completed by each group of broadcast routing protocols. All hosts participating in multicast must implement IGMP.In fact, our department has been doing quite well, Every Friday afternoon, there will be a meeting of all the staff of the Finance Department. I will make a report on my work problems last week and my work plan for next week. Everyone will speak. If any problems are raised on the spot, our manager will record the problems that the department can solve by itself and cannot solve by himself. They will raise the problems of their department when they hold a meeting on Tuesday, convey the spirit of the meeting to us on Wednesday morning and give feedback on the problems solved. If there are any problems in our work, we will report them immediately, because only people can solve the problems faster in this way, but we write these things every day, every week, every month, and every week to summarize and speak, and from time to time to reorganize and summarize them according to the requirements of the company.Channel 4正式预定120分钟时长的单集剧《援助/帮助 Help》[暂定名]，Jodie Comer和Stephen Graham确定主演。　　本剧由《黑暗物质》编剧Jack Thorne撰写，《第三天》导演Marc Munden执导。剧集将聚焦在第一波新冠疫情中受到极大冲击的英国护理中心。　　故事发生在利物浦一个虚构的护理中心，讲述了护理中心一名年轻工作者 (Comer)和一位病人 (Graham)，两人的生活因春季爆发的新冠疫情而永远改变。　　Sarah很聪明，但在学习和工作中一直都不合群。家人认为她注定一事无成，但她意外地发现在阳光护理中心做一名护理员，是自己的使命所在。Sarah十分善于和护理中心的居住者沟通，尤其是47岁的Tony。Tony患有早发型阿尔茨海默病，大脑逐渐退化，这让他不得不住进护理中心。疾病导致他产生间歇性困惑和突发暴力行为，其他员工都难以应对，但在Sarah的照顾下，他开始逐渐与她交心。Sarah在护理病人上的成功，帮助她重拾了自信心。　　当2020年3月新冠疫情爆发，Sarah所取得的一切成就都遭到了质疑。她和同事们在装备不全、准备不足的情况下，竭尽全力地抗击着疫情，而当局却似乎并不在意他们。坚定不移的Sarah想方设法保护着自己负责护理的人们，这些人的病情使得他们在面对折磨和孤独感时，更加痛苦。但护理中心员工们的坚持、不懈努力和无私奉献，起到的作用十分有限，Sarah被逼入了绝境，迫切想要找到一条出路。　　英国护理院在此次疫情中受到的冲击尤为严重，超过1.9万名的居住者因新冠死亡。护理院是英国目前实施最严格封锁措施的地方之一，因担心在脆弱人群感染，居住者无法以任何重要方式见到所爱之人。/Friends of New into the pit Look Here/Make more use of downloaded components or plug-ins, don't build everything, how to quickly and efficiently model is the key, learn to control the software to achieve the goal, instead of being controlled by the software.