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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.这期间英布和尉缭联手巩固了关中的防务，并且的逐渐地向关北地区推进。The reporter went deep into India for half a month to investigate and produce in-depth manuscripts. He described and analyzed the competition situation in India's mobile phone market in many details. The manuscripts were in-depth and good-looking.该剧讲述了英租界探长冯九思作为地下党情报人员，在错综复杂的关系结构中、在残酷的革命环境下、忍住孤独和诱惑，最终锻造成隐忍、淡定、果敢坚强的中共战士的故事。However, today, due to the popularity of beverage shops, when we want to drink orange juice, the first idea is to find the contact information of beverage shops, describe your needs, address, contact information, etc. through telephone and other channels, place orders and wait, and someone will send orange juice in a short time.Repeating your current daily work for 1,000 days will not make you an expert, but will only make you fall deeper into the current situation. Psychologist Anders Erickson's principle of "deliberate practice" has refreshed our understanding of learning and practice, knowledge and skills, 10,000 hours and success. What is more valuable is that the book focuses on explaining how to practice "deliberate practice" in our work and life. As long as it is applied, we will be able to train ourselves to be outstanding in 1,000 days.太行山一带，八路军游击队司令龙大谷骁勇善战，机智过人，15岁就参加了红军，身经百战，被军中将士们奉为“战神”。抗日战争爆发前，龙大谷因在抗大学习期间，为替警卫员李广出头，一时冲动出手打了同期学员张道平，受了处分。以至于在红军缩编为八路军之时，龙大谷从原来的红军副师长降为游击队司令，随行上任的只有警卫员李广和参谋刘水泉二人，以及上级领导田烽给他的五十块大洋。即便如此，龙大谷依然不屈不挠，硬是在山西这块热土上平地拉起一支敢打、能拼、必胜，号称“龙支队”的作战队伍，凭借丰富的作战经验打赢了一场又一场的恶战，威震敌方！