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GoThe window is usually next to the ticket gate. If there is no one at the window, you can look for it next to the window. There should be a door to enter the office (the window and the office are a room connected together). After entering, you say "" or "Hello" and the staff will come out when they hear it. Some doors will ring as soon as they are opened, and the staff will come out.Second, understand the monomer modelDisadvantages: There are a little more node objects in the responsibility chain mode. It is possible that most nodes do not play a substantial role in a certain request process. Their role is only to makeInterpreter mode: pay attention to encapsulating changes in specific fields, support frequent changes in domain problems, express problems in specific fields into sentences under certain grammatical rules, and then construct an interpreter to interpret such sentences, thus achieving the purpose of solving problems.We know that computers can be used for work, study, entertainment, etc. In addition to the necessary computer hardware, software is also needed. Usually, we call a computer with only hardware but no software "bare metal", which cannot do any meaningful work. At present, software can be divided into two categories according to its use: system software and application software. System software is a program designed for computer systems to efficiently use and manage computer software and hardware resources and support the operation of application software. Such as operating systems, programming languages and language processing programs, network system software, system service programs, etc. Among them, Windows operating system is what we often use. Application software is a variety of programs that are user-oriented and written to solve practical problems. It can be written by users themselves or purchased. For example, office XP, Photoshop, Red Alert and so on, which we often use.自古文武不宜交，即便私下关系很熟的文臣与武将，在皇帝面前，也必须要装出水火不容的样子，以示清白。