牛牛自拍视频视频720

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 Baidu3. In the pop-up "Environment Variable" window, click the "New" button below to create a new environment variable named "JAVA_HOME" in the pop-up "New System Variable" window. The variable value is the installation path of Java, and I am: D:\ project\ tool\ Java\ jdk_9. 0.1. As shown in the figure.Because there is still a difference between Internet celebrities and stars, we will not count them.部队转业干部周凌云家乡办了一家中外合资药厂由于经营中药有方业绩不俗几年后老战友陈之江和妻子冯笑冰也从部队转业陈之江主动放弃了政府给安排有优厚待遇工作一心想去老战友周凌云厂子上班陈之江周凌云药厂做后勤苦学制药知识利用业余时间学习管理跑销售很快成为一名合格副厂长一年后陈之江通过一项业务认清了合资方日本某企业嘴脸揭穿日方唯利图真相陈同大股东日方矛盾突起陈不愿让身为小股东周为难主动离开合资药厂陈为了有一天也能办起自己药厂开餐馆、贷款、找担保、寻找项目费尽周折老战友们帮助下终于找到一祖传秘方准备筹建之江药厂不料周为自己合资药厂也一心想买下这一秘方二位昔日曾战场上把生留给战友把死留给自己战友却今天商场竟争中遍体鳞伤 当中国加入WTO后四位老战友猛然意识到作为新一代中国民营企业家们应站一起同一战壕联合起来把具有中国自主知识产权中成药打入国际市场把中国企业做大做强……临近“入学考试”，为了得到优质生源，维持名校的升学率，学校里四处迷茫着紧张的气息。老师们细致的准备着相关事项；而网络这端，则在讨论着破坏入学考试的事情。某一天，当杏子检查教室时，看到黑板上不知被谁写的要破坏入学考试的大字。凶手是谁？又是出于何种目的想要破坏考试？登场的所有人物都有可能是凶手，而答案不到最后一刻不会揭晓。小镇上声名狼藉的脱衣舞俱乐部即将关门大吉，营业的最后一晚却变成血腥之夜！当一群遭受致命感染的顾客现身闹场，俱乐部老板娘和她的脱衣舞嚷们必须挺身而出，情况却逐渐一发不可收拾……