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第四次考试，后娘和奶奶来了。20,000 Yuan Hou Ruining/Cui Liangfan, Editor of "Deep" North Shaanxi Oil Field past: Ten Years of Resource Battle for Oil Giants, Yang YueRule: Try to match each message flowing through here according to the specified matching conditions. Once the matching is successful, the processing action specified after the rule will process it.奥兰多·布鲁姆领衔出演亚马逊新剧《狂欢命案》，这也是他首次以常规角色亮相小荧屏。这部黑暗奇幻题材剧集共8集。在一个具有维多利亚风格的新兴城市，各色神秘生物因逃难而齐聚在此。故事围绕一宗狂欢之夜发生的命案展开，奥兰多·布鲁姆饰警探莱克弗特·菲勒斯特雷。该剧年内开拍，2019年播出。《潜水艇奥利》中的主角奥利和贝斯是两只年轻的调研潜水艇，他们从不循规蹈矩，时常恶作剧。在人类主管“深海司机”道格的带领下，它们探索水下世界并发现了很多从前不为人知的有趣秘密。在执行任务的同时，他们被各式各样的冒险所吸引而分心，但它们也从每次的冒险经历中提出问题并学到教训，愉快地成长。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.