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(a) without obtaining qualifications, engaged in social fire technical service activities without authorization;Composite Reuse Principle (CRP) is to use some existing objects in a new object to make it part of the new object. New objects reuse used functions by delegating to these objects. In short, it is necessary to use synthesis/aggregation as much as possible and not inheritance as much as possible.FX将开发剧集版《异形》！诺亚·霍利(《冰血暴》)担任创剧人及执行制作人，雷德利·斯科特也有望担任该剧的执行制作人。泰剧别样少女　　刘关张从军后就显示出非凡的才能，他们一败黄巾于琢郡，二败黄巾于青州。不久，又救出被张角打败的董卓，但董卓见刘备是白身，并不答谢。张飞大怒，要斩董卓，被刘备劝住。The maintenance of exceptions is much simpler. It is mainly to handle faults. It should be noted here that all faults should be handled with documents to check, that is to say, the application, approval, processing and other processes should be completed. If it is urgent, it should be supplemented later, which is helpful for internal audit of related events.