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The former is to query a DNS server for a non-existent server, while the latter is to query a real domain name.Q: Can you introduce your personal information and relevant background?Let's understand such a problem first, If our front-end development needs are the needs given to us by the demand side, It is possible that a front-end developer will deal with multiple demanders, Therefore, it will keep in touch with multiple demand parties. Then in the program it means keeping references to multiple objects, The larger the program, There will be more and more objects, The relationship between them will become more and more complicated. Now if there is an intermediary (if it is our supervisor) to meet the needs of multiple demanders, Then the demander only needs to give all the requirements to our supervisor, who will assign tasks to us according to our workload in turn. In this way, our front-end development does not need to contact with multiple business parties, we only need to contact our supervisor (i.e. Intermediary), which weakens the coupling between objects.Our App is used as launcher by Android as the system application task stack, so it is not displayed.萧洛宸前往集市，在医馆中遇到了和陈汐瑶一模一样的人，萧洛宸冒充成伙计在医馆中工作，慢慢发现眼前的女子便是当初的陈汐瑶，而她却失忆了，萧洛宸决定默默守护，但温亦妍却从宫中逃了出来，利用毒药让陈汐瑶恢复了记忆，并下毒给萧洛宸，萧洛宸也在痛苦中晕倒，亡命鸳鸯再续前缘。屠狮英雄大会结束，周芷若是大赢家。郑氏忙将他脑袋转过来，哄道：哥哥姐姐们都不饿。