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Time relays can be divided into AC relays and DC relays according to different power supply requirements, which are respectively used in AC circuits and DC circuits. Time relays can be divided into power-on delay relays and power-off delay relays according to different functions. Time relays can be divided into sealed relays, small relays and micro relays according to their shapes. In addition to the above classification of time relays, time relays also include special types of relays such as resonant relays, stepping relays, proportional relays, etc.　　小香几年前来到昆明打工，此后便杳无音讯。在裘水天心目中，这个与众不同的女孩对自己也是情深意重。只是，他没有想到这仅仅是一场暗恋，而当他终於来到这座城市时，一切能够如他所愿麽？这一季对应原著小说第九部和第十部，主人公乌特雷德将夺回祖传领地——贝班堡。就在武林大势底定的同时，天下霸业一统，卧薪尝胆的六祸苍龙，终在大起大落之后，再次创造了自己的王朝，成为一代共主；超凡智者寂寞侯，法门传人无名，以及身怀绝技的千流影…，六祸苍龙的紫耀皇朝已经具有当世无双的势力。无奈天下太平，天下止争的做法却掀起武林新风暴。伴随着六祸苍龙暴政将起，一代神人素还真重出武林，准备推翻六祸王朝，与一代智星寂寞侯正面对抗。两名顶尖智者的对决，究竟在这场双方运筹帷幄的棋局中，会写下怎样的历史？异度魔界偃旗息鼓，究竟在盘算什么呢？"Yes, This is 20 minutes, It is also for this reason, Alas, these 20 minutes, I felt longer than two years, Without artillery support, There have been many "halts" in the positions. So I also saw clearly what that strange smell was. How can I describe it-it looks like the strange thing like a dog before, Four feet, Round and thick body, running very fast, but the difference is its back, above is not hairless kind of skin, but one by one full of small peach size purple "blood bubble", a strange thing can carry at least more than ten, it runs, these "blood bubble" before and after the left and right trembling, that makes people see scalp pins and needles.The reason why the logic for creating an object is put into a separate class is that it can be used by multiple clients. And separates the creation and use of objects. However, this design also has many defects. First of all, SimpleFactory is a specific class, so we must program for the implementation, making the system lose its flexibility in this respect. Second, if we add new products, we have to modify the code in SimpleFactory, which violates the opening and closing principle. The above model is also called simple factory. He does not appear in GOF mode, it is more like a programming habit.