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.
The third handshake: the client receives the SYN + ACK packet from the server and sends the confirmation packet ACK (ack=k+1) to the server. After the packet is sent, the client and the server enter the ESTABLISHED state and complete the three handshakes.
百善孝为先。
The interior surface of the house was cleaned relatively clean. In fact, every drawer and wardrobe had obvious turning marks. There was only a newly laid quilt and two pillows on the bed. Bedclothes, bedspreads and sheets were all missing. Investigators felt abnormal. Soon they made a shocking discovery: the investigators turned over the pillow and found a palm-sized piece of fresh blood on it. When the quilt was opened, they also found obvious blood on the mattress. Through professional instruments, some traces that cannot be seen by naked eyes gradually appear. Trace blood was found in the living room. The blood seemed to have been dragged by someone with a mop, but it was not cleaned. Opposite this bedroom is an equally messy room. What attracted the investigators' attention was several pieces of clothes scattered on the ground, several of which should be the bride's underwear, with obvious tear marks on the underwear. These abnormal conditions sank the investigators' hearts. The young couple disappeared. They did not receive the kidnapping and blackmail phone calls, and the scene was cleaned and disguised, which seemed to indicate that this was a vicious case.
夏朝太康时期，村寨的祭天仪式上小夭闯祸，恰逢一群蝙蝠袭击了村寨。众人认为是小夭触犯了天怒，祭司要杀了小夭祭天谢罪。为了救下小夭，树生立下“军令状”，如果找不出异象的原因，愿和小夭一起祭天。树生在小夭和姬文渊的帮助下走进了密林深处，经过一番周折终于找到了蝙蝠的洞穴，树生放火把蝙蝠全部烧死了，顺利消除了村寨的危机，树生摇身一变成为了村寨的英雄，但是村寨中有一个半疯半痴的老头却一直嚷嚷着大祸即将来临。突然，村寨里的一家三口一夜之间全部死于蝙蝠王攻击，村寨的人们认为是树生放火烧死蝙蝠激怒了蝙蝠王，树生又变成了山寨的罪人。树生和小夭被绑起来了，疯老头帮助姬文渊救下了二人。姬文渊劝树生带着小夭离开村寨，树生却认为这场蝠王之灾是他招惹来的，必须由他解决，但该如何打败蝙蝠王呢。这时，疯老头说神龙弓是除掉蝙蝠王的最强兵器！树生夜闯密林中的洞穴，大战吸血藤，终于找到了神龙弓。蝙蝠王终于现身了，此时树生心中充满了无穷的力量，射杀了蝙蝠王。树生从此肩负起守护着华夏苍生的重任。
夷陵的位置和战略意义就逐渐凸显，历史上三国时期的蜀吴之间的夷陵之战更是有名。
七煞是紫微斗数中14颗主星之一。七煞是一颗坚毅勇敢的星曜，象征「威勇」，化气为「将星」，主「肃杀」。具有运用帷幄的能力，拥有理智而独立、冲锋陷阵、冒险犯难的特性。本片为邵氏早期经典武侠改编作品。闻风丧胆的七煞会，再次集结各个分坛主，江湖将掀起血雨腥风......
Fine wine
[Report] Look at the picture and don't explain
A. Speed skating
当真是……刘邦心里无限悔恨，喊杀声再次在身后响起，刘邦猛然惊醒过来。
故事以加藤实秋的小说「Maison De Police」系列为原型，描绘了主人公新进刑警牧野ひより（高畑）来到了只有退休警察居住的共享房屋「Maison De Police」，被一群能力超群知识丰富前警察“大叔”们呼来喝去的同时，解决了一个又一个案件的故事。
东陵大盗事件发生在民国初期，军阀混战的年代，堪称中国文物史上继八国联军进北京、火烧圆明园之后第三大文物浩劫……清东陵的地下蕴藏着惊世财富，因修建东陵而留下的恩怨情仇，为盗地下的宝物和护宝，更是演绎着人生的恩恩怨怨，爱恨仇情，东陵有着太多的传奇……
How to operate it?
Time of sale: 15th of February 2019
她们不敢走远，因此只找了些野果并些山菇回来，没有猎到野味。
