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(2) Ships limited to draft shall fully consider their special conditions and drive with special care.Mind maps have images, branches and keywords, which can help us quickly sort out our thoughts and find key information. When we watch mind maps review again, we can quickly understand them.One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.Computer closed!有日本的莎士比亚之称的近松门左卫门先生，大概会在一个世纪后写上一出史诗级yy戏剧——《国姓爷合战》，戏中郑成功在日本长大，娶日本女人为妻，中年时期才回到中国，从人设到性格思想，完全是一位根正苗红的日本武士，常备口头禅我们日本人……。P0M0=0xFF;