Command mode belongs to the behavior mode of an object. Command mode encapsulates a request or operation into an object, and separates the responsibility of issuing the command from the responsibility of executing the command through abstraction of the command. The implementation of command mode can provide the functions of revocation and recovery of commands. The specific structure diagram is shown below.
黄瓜看着这个细瘦的小女娃，巴掌大的小黄脸儿，全没有这个年纪小孩子该有的水润光泽，倒凸显得眼睛十分大。
他是否能够继续记得他的爱？当我们快乐的享受爱情的同时，我们永远不知道大风何时会吹散我们的爱？ 但，只要在爱情中爱得真实并且爱得坚定，在心中拥有力量。 这份爱情获得幸福将得以恢复并且难忘！
她对赵锋厉声喝道：打这刁奴。
南海一片胜景，北方可没这么走运。
Based on BIM technology, it can dynamically display the installation of important parts in advance and provide virtual reality information for construction scheme discussion and technical exchange. Subway construction may have an impact on the surrounding buildings. BIM technology can simulate the impact of subway construction on the surrounding buildings. Combined with reinforcement technology, it can judge whether the arrangement between various components is reasonable, control the construction progress, carry out comprehensive quality inspection and observation on the construction, dynamically simulate the change trend, and put forward improvement measures.
葫芦紧紧攥住他肩头，一字一句道：我只带了两千人来，你有一万人。
2417
约会实验室第二季……
本片设定在东京的一晚，一名时运耗尽的拳击名手利奥(洼田正孝饰)遇到了他的初恋莫妮卡(小西樱子饰)。莫妮卡是一名吸毒的应召女郎，但她依旧很天真。莫妮卡不知不觉陷入毒品走私计划之中，两人在这晚被腐败的警察、黑帮、利奥的对手以及三合会派来的女杀手追杀。
ECOC introduces the idea of coding into class splitting and has fault tolerance in the decoding process as much as possible. The ECOC process is mainly divided into two steps:
Create multiple instances representing different users and call the above two methods for each instance.
They also seek technical support from the Financial Services Information Sharing and Analysis Center and share their security threat information with it.
"I think so, But it was too late, I'm sitting here and I'm telling you, It is said in a straight-forward way, But when this happened, Basically between crackles, The company commander's military quality is so strong, Also see in the eye can't help, He saw that the three men could not be saved, I think he is also in a hurry, From behind, he grabbed a three-piece explosive cartridge, Unscrewed the back cover, pulled the lead and held it on his shoulder, just like the javelin thrower in the Olympics. He threw the cartridge sideways, He threw such a heavy thing so far away, It's almost farther than I threw a grenade, Because I don't know how many times the front of the position has been ploughed by artillery, Full of floating soil, It's very soft, So when the explosive cylinder landed, it was finally inserted obliquely on the ground. It was also impartially inserted in the most densely populated position of the group of strange dogs, Then the explosive barrel exploded, which was quite powerful. I felt that it was more powerful than a shell. The width of the whole position was completely covered by 10 meters in front of it. On the spot, the strange dogs that were still biting the body and rushing halfway were all killed. My military cap was blown off by the shock wave. "Wang Zeduan said.
她卖力地啃着一只鸡腿，忽然想起板栗哥哥，昨天战斗了一天，晚饭都没吃，就掉下山崖，身上还带着伤，能找到吃的么？现在会不会饿得头昏眼花，躺在山林的某处不能动弹？望着手上的鸡腿，她不禁觉得难以下咽起来，喉咙酸涩，泪水灌满眼眶。
马里奥是位护士，他马上就要有第一个儿子。安东尼奥·帕丁是个知名的制毒师，但由于疾病，不得不依附他的家人。家族的生意现在由他的两个孩子，东尼和奇凯掌握，他俩马上要进行一项充满风险的贩毒行动。当他们的人生相交错时，所有人都选择了共同的道路：复仇。这是一个关于背叛，毒品，家庭争端与暴力的故事。（撰文：深影-Refeal）
法王施计欺骗国王要治好公主的病必须得到灵山草人，于是国王下令号召所有人寻找草人，穷小子张翔（刘锡明）无意中遇到草人并搭救了仙仙，并与其相爱。
抗战前夕，上海大法官徐定山因坚持严判日本军官大冢一郎奸杀中国女大学生案，被人暗杀街头。其女徐曼抬棺抗议，却遭到地痞流氓毒打，大学生金浩挺身相救，从此两人相识相近。抗战爆发，金浩等人在中共地下党领导人干成同志的影响下，回乡组织抗日武装，并加入了中国共产党。徐曼则被迫加入了国民党军统组织。金浩和战友陆之林奉命回到上海，展开地下对敌斗争，并再次与徐曼相遇。在一系列抗日活动中,金浩和徐曼并肩锄奸，结下了更深的感情。日本投降后,徐曼回到了家乡并与金浩结婚，但国民党军统没有放过她,将其投入监狱,在狱中生下了她与金浩的儿子,敌人让她用儿子的命换金浩的命，她设计实施了巧妙的暗杀行动。此后，徐曼母子俩被刘宗山带走，远赴海外，最终客死他乡，再也无缘回大陆，一切都在儿子回国寻亲后得到答案。
AbstractCalculator is an auxiliary class that provides auxiliary methods. Next, implement each of the following classes in turn:
