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"Shanghai cannot make everything, nor can it eat all the industrial chains from top to bottom." In April this year, Li Qiang stressed at the city's "Four Major Brands" promotion conference that in order to develop Shanghai's manufacturing industry, it is necessary to identify the high end of the industrial chain and value chain, aim at the most cutting-edge and cutting-edge disruptive technologies, aim at the core links that have control over the industry, and aim at those "source innovations" that drive a wide range of industries. "Not every link should be there, but the core link that has control over the entire industry should be in hand."A. Flight qualification;The function of the intermediary mode is to remove the coupling relationship between objects. After adding an intermediary object, all related objects communicate through the intermediary object instead of referencing each other. Therefore, when an object sends a change, only the intermediary object needs to be notified. Intermediaries loosely couple objects and can independently change their interaction.讲述了泰国一个热爱天文学的女孩萨卡伊非常喜爱姨母创作的漫画《平行世界》中的男主角厚琦，一次偶然机会使萨卡伊得到了一本神奇的书，在生日当天，萨卡伊在书中写下希望能遇到厚琦的愿望，谁知厚琦与漫画中的人物戴罗、诺娜竟然真的一起出现在现实生活中。在打斗中，诺娜被戴罗劫走，萨卡伊将厚琦带回家中。面对现实社会，厚琦十分迷茫，并开始产生人才会有的情绪和特征，萨卡伊耐心向厚琦解释各种问题，教会厚琦适应作为普通人的生活，并承诺一定会将厚琦带回漫画世界，两人在相处中渐生情愫。诺娜发现厚琦不再喜欢自己后，开始学着与戴罗相处，发现戴罗也有善良的一面，逐渐爱上戴罗。众人发现如果不尽快回到漫画世界，所有漫画人物都将在月圆之夜死去。这时，漫画中的邪恶人物庞球也来到现实中，在与庞球的斗争中，戴罗和诺娜不幸牺牲，而庞球也毁掉了可以将厚琦送回漫画世界的书。厚琦在现实生活中的最后一天，与心爱的萨卡伊一起度过，并希望萨卡伊能微笑生活。三年后，萨卡伊成为一名优秀的天文学家。安置好小葱，她让人去叫板栗。1996年，一场百年不遇的洪灾冲垮了绿岗村农民养家保命的几百亩山地，乡亲们看着满目疮痍的家园失声痛哭。河北农大教授李保国随科技扶贫组来到村里，乡亲们绝望的泪水刺痛了他，他决心扎根绿岗，指导果农改良苹果品种。在此之前，李保国曾在太行山深处的南川峪为小流域治理付出了十几年心血，直到把那里变成“太行山最绿的地方”。在绿岗，初来乍到的李保国穿着打扮和长相比农民还土气，并不被认可，他的科技主张也屡遭果农抵制，朴实的李教授最终用行动和成果打动和感化了乡亲们，绿岗苹果也成为享誉世界的品牌。科技改变了土生土长的农民们的命运，而李保国却在收获成果的季节倒在了他的岗位上。The detection and defense of DDOS attacks should be considered as a whole system from three different stages before, during and after the attack.