? Singleton pattern is the most common and simplest design pattern in design pattern, which ensures that only one instance exists in the program and can be accessed globally. For example, account information object management used in actual APP development? Objects (SQLiteOpenHelper) and so on all use singleton mode. This model has several advantages:
Fire power supply
Approaching Science: Revealing Online DDoS Attack Platform (Part I)
这部动画由诸多微小而有趣的故事组成，是一部很适合中国孩子观看的动画片。大头儿子、是个活泼可爱的大头的小孩，小头爸爸、是个给予大头儿子的是想象力的满足和对他一颗童心，围裙妈妈是一个三口之家，他们是中国现代家庭教育典型的缩影。
二十集系列轻喜剧《起步停车》视角独特，内容新奇，以多角度全方位手法描写九十年代中期社会方光未艾的“学车热”现象，通过1194号教练车上一班性格、职业迥然不同的学员和他们校内外色彩斑阑的生活，反映了驾校怎样将一群散兵游勇式的“马路杀手”培养成观念强、守纪律的合格首都驾驶员，以一集集鲜活生动的事实，幽默而又深刻的刻画出教练员和交警们才智劳动的巨大付出和他们甘心奉献的可贵精神。
中原某市，市郊发生一起杀人案件，某公司董事长被人杀害尸体被肢解，市公安局接到报案后马上赶到案发现场，展开详细调查。随着调查的探入，一个庞大的黑神会团伙逐渐浮出水面，黑神会团为绑架勒索、杀人灭口。特警队临危授命，火速出击，欲将团伙一网打尽，但团伙的几个主要头目却突然失踪，究竟是谁泄露了机密？案情北后陷藏黑色真想，杀机暗诵，黑恶势力如影随形……
4. Data processing attacks
在未来的约500年后，人类社会高度发展，并已实现向外太空的殖民。而在这一过程中，新的危机威胁着人类的存在。此时此刻，托马斯·拉斯基（汤姆·格兰 Tom Green 饰）还只是一名殖民星球军事学院的学生，他与迪娜（Kat de Lieva 饰）、Sully（Masam Holden 饰）每日进行艰苦严苛的训练，在此期间他一面饱受神秘疱疹的困扰，一面又对战争的本质产生之一。日常与身为地狱伞兵的哥哥通话给他仅有的安慰。直到某天，哥哥战死沙场，托马斯的去留也到了决断时刻。这一夜，未知的外星生物入侵学院，造成巨大的伤亡。危难时刻，战场之神士官长降临……
Later, the battle was the same, and it was fought several times over and over again. The ammunition consumed most of the time. The front of the position was covered with enemy bodies. I remember that after resisting the fifth attack, the Vietnamese army stopped there. It did not launch any new attack for a long time. Until more than 3 pm, the Vietnamese army actually "let dogs bite"! I was so impressed by the way the dog looked, The appearance is about the same as that of the domestic dog in my hometown. But there was no hair all over her body. The two eyes are still very far apart, The key is to run very fast. There was some grass in front of the position, and craters were everywhere bombed by the subsequent shelling. The 152-meter shell was a large crater with a diameter of 5 or 6 meters. However, this kind of "dog" can easily cross one with one jump, and there is no need to slow down in continuous jumping. The speed of impact is definitely not comparable to that of human beings. "
让他们敢上阵杀敌的唯一方法，就是制敌于几里之外，利用武装优势提高战力与士气。
The attacker first forged the address to initiate a SYN request to the server (can I establish a connection?) The server will respond with an ACK + SYN (Yes + Please confirm). The real IP will think that I did not send the request and did not respond. The server does not receive a response and will retry 3-5 times and drop the connection after waiting for a SYN Time (typically 30 seconds-2 minutes).
姜洪武的亲人都不在了，家也没了。年幼的场景、熟悉的街道已经变成一片废墟，随着梦境渐渐远去。姜洪武被生死兄弟郭小东接到了自己的家里，而郭小东的妻子吕梅却极不欢迎他！
黎章见黎水接过勺子发愣，急忙示意她喝汤。
对约翰·米汉的前女友、前妻、警察侦探的进行了详细采访，描述了其长达数十年的令人毛骨悚然的犯罪生涯
失忆的慕容云海（张翰饰演）恢复了之前的记忆，却偏偏忘记了楚雨荨（郑爽饰演）。开始了一段拾忆旅程。
这天天刚蒙蒙亮，黎水照常比别的军士起得早。
Recently, security researcher MathyVanhoef found that there are logical defects in WPA2 protocol layer. Almost all Wi-Fi-supporting devices (including but not limited to Android, Linux, Apple, Windows, OpenBSD, MediaTek, Linksys) are threatened, and the data transmitted by them are at risk of being sniffed and tampered with. Attackers can obtain data information in WiFi network, such as credit cards, emails, account numbers, photos, etc., which is extremely harmful.
