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Reflective attacks typically use protocols that do not require authentication or handshake, Reflection attacks need to forge the source IP address of the requested data into the IP address of the target. If the protocol used requires authentication or handshake, the authentication or handshake process cannot be completed and the next attack cannot be carried out. Therefore, the vast majority of reflection attacks are carried out using network services based on UDP protocol.　　韩铁匠祖传的青龙刀不幸落入日寇手中,韩铁匠舍身护刀,与宝刀同归于尽。临终留下遗言,希望徒弟们团结一心,共同打出宝刀,报效国家。草王坝村是贵州遵义县大山深处的一个常年缺水的小村落，为了改变家乡贫困缺水的面貌，村支书黄大发自六十年代起带领全村人绝壁凿天渠，中间经历的种种失败、种种磨难没有将他击垮，反而一次次激发出他艰苦奋斗、战天斗地的豪情。。。As a new salesman, don't rush out to find customers. First of all, it is also the most basic thing to have a comprehensive understanding of the attributes of the products to be promoted, and to have an understanding of any aspect and information about the products. At the same time, we should have a familiar process with the company's work flow and understand the company's sales and operation system. Only by mastering these can we well introduce the company's products to our customers, and only when we encounter relevant problems in the marketing process can we know how to solve them, so as not to be in a hurry and affect our customers' confidence in the company. Therefore, sharpening knives does not miss woodcutters, and when they are fully prepared to find customers, the results will definitely be different.4. Obtaining customers is relatively more accurate.众人惊得目瞪口呆：四五只猫啊。