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Dissolution mode. The pixel color generated by the dissolution mode comes from a random replacement value of the upper and lower mixed colors, which is related to the opacity of the pixel.紫茄则又被迷晕了，让人背着走。该剧以诚信为主题，带有喜剧元素，讲述了一个关于诚信的故事。围绕着两个家庭的两代人在家庭、工作、生活中所面对的一系列困惑和矛盾展开，讲述了当代年轻人与老年人在面对选择时的不同价值取向，引发了人们对社会上一些真善美与假恶丑现象的思辨与思考，发人深省。Germany: 760,000及时站出来，不仅表现了刚正的风骨，还为自己挣得了提升的机会。可是之前，元始天尊翻手间，就把佛教抹去。The principle of opening and closing means opening to expansion and closing to modification. When the program needs to be expanded, the original code cannot be modified, but the original code should be expanded to achieve a hot plug effect. Therefore, a summary of one sentence is: in order to make the program scalable, easy to maintain and upgrade. To achieve this effect, we need to use interfaces and abstract classes, etc. We will mention this point in the later specific design.