The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu
Most of the private decoration is done by cleaning the bag, that is, the owner is responsible for all the materials, while the decoration team is only responsible for the construction. Owners need to spend a lot of time visiting the market, understanding the market situation and selecting materials, which include not only ceramic tiles, cabinets and other main materials, but also auxiliary materials with small usage and various varieties that need to be handled by owners.
杨美琪因为嫌贫爱富和男友王大伟分手。并邂逅了自己闺蜜的丈夫张宝文，暧昧之火燃烧到了闺蜜王莉的眼前。在情义与爱情的抉择上，王莉选择了原谅丈夫。而杨美琪却不甘心，找到前男友王大伟。前男友更是在这把火上添加了助燃剂。最终使得王大伟赔了夫人又折了兵。
"I personally feel that there is still a little luck in this, After breaking up the colony, For a few more minutes, I don't know, Because this is the first time I have met such an 'opponent', No one has experience, Anyway, one is counted as one, It is true that there is no end to shooting with guns. Fortunately, there were flamethrowers prepared to counter the impact on the position at that time. The model I remember was 74, At that time, it was still a relatively new model. In terms of performance, The direct firing distance of '74-jet' (abbreviation of 74-type flame thrower) is about 50-75 meters. If the soldiers who operate it are not specially trained, Generally, only straight-line targets can be hit, It's a little bit of a slope, But in the hands of specially trained veterans, '74 Jet' can fire into that air, Although the range is much less than that of direct shooting, Only 25-30 meters, But after all, he didn't take it to the plane, It is used to deal with enemies in low-rise buildings in street battles. Therefore, it is enough, but it is quite dangerous to spray high-altitude targets with flamethrowers. After all, the fuel sprayed out is liquid. Once the distance and wind direction are not grasped well, it is easy to let the fuel sprayed out fall back again. If it accidentally splashes on oneself, it is really a "fire".
抗日战争时期，中国共产党积极打击日军的侵略。八路军独立团在一次日军扫荡中救出了一名青年学生忠孝，看他一心投军，答允留他在军中。忠孝性格孤僻怪异，曾随父母留日多年，身上公子哥洋学生的习性与庄稼汉出身的战友们格格不入，加之训练成绩总拖后腿，起初备受孤立。最终，在战友们的帮助下，他在战争中成长，战胜敌人更战胜了自己，屡屡建功，从一名文弱的青年最终成为一名捍卫国家和平，肩负民族兴亡的中国军人。
这是一张美到极致，魅惑到极致，潇洒到极致的图画。
Season 4, Episode 4: Silver Blaze《银额马》13 April 1988
影片讲述大侦探在东方快车上巧破一桩谋杀奇案的故事。波洛乘上东方快车，夜间三次被吵醒，第二天清晨便发现同车的美国富商雷切尔被人谋杀，死者被戳了12刀。波洛根据他所观察到的各种可疑迹象以及同车人士的讯问，并结合美国实行的12人陪审团制度等情况进行逻辑推理，成功地揭开了一起“集体复仇”奇案。
破烂王》根据辽宁本溪的一个真人真事改编，讲述改革开放初期，一群废品收购人员创业的事迹。一个破烂王收破烂起家，后来成为了一家钢铁公司的老板。刘蓓在剧中饰演破烂王的女儿，起初被分配到文化馆工作，后来文化馆一个工作人员追求她，她没有同意，结果被人挤兑，调到收破烂的公司。在新的工作单位，这个人物经历了从一开始特别抵触、到后来干得特别投入、特别出色的这么一个过程。
MDT members should learn from each other and share their successful experiences in communication.
人到中年的杨树是单身女老板唐红的私人司机，带着18岁的女儿杨树苗，青春期的她任性强硬，和杨树冲突不断。唐红一直没有结婚，虽然身边有土老板孟来财追求，但她爱着杨树，对杨树苗也关爱有加。碍于身份的考虑，正直老实的杨树一直不愿意接受唐红的爱意。在女儿设计下，杨树结识了颇像前妻的年轻女孩顾菁菁，两人互生好感。杨树就这样夹在了唐红和顾菁菁之间，一幕幕喜剧故事上演。后来，前妻的回国，让杨树放下了对前妻的执念，在与唐红的相处中杨树看清自己的感情，勇敢面对她的爱，两人最终走到一起；顾菁菁在与孟来财相识后，惺惺相惜的二人也产生真挚感情，最终四人各自情归所属。
调皮的小狐狸遇到了奉命降妖的王爷，没想到小狐狸意外亲到了王爷。王爷把小狐狸的内丹吸入体内，失去内丹的小狐狸没有了法力，而吸入内丹的王爷受到冲击变成了傻子。为了拿回内丹，小狐狸嫁给了傻子王爷，展开了一场奇妙的恋情
三月中旬，少年们从清辉返回，葫芦、板栗和黄瓜全部落榜。
讲述一位中产单身母亲女演员，如何整天工作之余，还照顾起三个女儿，而且她还得抽空应付住在对面街的英国籍母亲。
根据奥茨小说改编，安吉丽娜茱莉扮演了一位流浪女子，影片讲述了她与一群小镇女中学生的故事。四五个少女不满现况而团结起来，秘密基地就在郊野外的一间废弃屋。
真爱也许在我们心中不再永恒，但是我们相信这样的爱情存在于天堂……
夏天，是一个其貌不扬的女孩，在广播电台担任栏目编辑，有一次她无意中听到妈妈和自己同母异父的妹妹—悠悠谈论婚礼时说：“看着吧，到时你姐一定会穿着宽宽松松的黑色衣服、还是那么胖然后独自一人来参加你的婚礼”。母亲这句话让夏天瞬间失去理智，两人发生激烈口角，夏天与妈妈打赌，说自己一定会带着男朋友出席妹妹的婚礼，让所有人看到自己的蜕变。如果自己做到，就不能把外婆留下的房子卖掉，因为那里有夏天所有的童年回忆。妈妈同意了这个赌约，此时距离悠悠的婚礼还有278天。夏天通过电台早间的栏目诉说了自己的经历以及与母亲的赌约，得到了许多观众的认同，也同时在广播中吸引了很多前来约会的对象，在一次次失败的约会后，夏天逐渐成熟、勇敢，再也不是那个自卑的胖女孩。妹妹的婚礼将至，直到最后才发现其实真爱就在身边。
Excellence is not a gift, but a skill. You and I can master this skill.
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