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　　丁亚兰两口子一直准备买房子，没想到老李要去上海出差时车祸身亡。丁亚兰的生活顿时失去了支撑，杨红英极力宽慰。丁亚兰在整理老李的遗物时发现了老李珍藏着年轻时的女友给他的信，心潮起伏。觉得原本美好的爱情遭到了破坏。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.11. When piloting the ship, in addition to the sound numbers specified in paragraphs 1, 2 or 7 of this article, it may also sound an identification sound number composed of four short sounds.Attached are Civil Aviation Industry Standards of the People's Republic of China人的一些心性，平常是看不出来的，也需要磨砺。