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In the system, the client often needs to interact with multiple subsystems, which causes the client to change with the change of subsystems. At this time, the appearance mode can be used to decouple the client from each subsystem. Appearance mode refers to providing a consistent facade for a group of interfaces in the subsystem. It provides a high-level interface that makes the subsystem easier to use. For example, the customer specialist of Telecom can let the customer specialist complete the services such as charging telephone charges and modifying packages without interacting with various subsystems by himself. The specific class structure diagram is as follows:【影片花絮】在同事老林的帮助下，韩丁终于查得实证，并在最后的关键时刻，凭借着无可辩驳的铁证赢得了宝贵的申冤机会。最终，龙小羽的无辜得到证明。真凶张雄被抓获。韩丁将龙小羽带回家，见到了罗晶晶……是爱？是恨？是仇？是扭曲？是挣扎？还是成长？这是成长中的痛吗？麦穗儿和母亲他们的命运也将何去何从？女主人公在让我们和她一起品尝命运悲苦的同时，又带给我们无尽的思索…麦穗儿在为自己的身世之迷四处奔波，又意外地蒙怨多次被送进疯人院…在经历了一次又一次的心理和生理的折磨之后，重新振作的麦穗儿创办了自己的公司，却不料被同父异母的妹妹金草抢走了辛辛苦苦创办的企业…有了马鞍，高桥马鞍和环首刀在，只要有足够的战马，越国就能打造一支非常强大骑兵军团。2. If radar equipment is equipped and usable, it shall be used correctly, including long-distance scanning, in order to obtain early warning of collision risks, and radar plotting or equivalent systematic observation of detected objects.Ahem, it is stated in advance that this is an overhead type.