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"Exposure compensation is also called EV, which is an abbreviation of Exposure Values and a quantity reflecting the amount of exposure. EV +/-commonly known as exposure compensation, it was originally defined as: when the sensitivity is ISO 100, the aperture coefficient is F1, and the exposure time is 1 second, the exposure is defined as 0, the exposure is reduced by one gear (the shutter time is reduced by half or the aperture is reduced by one gear), and the EV value is increased by 1. Increasing and decreasing exposure compensation depends on adjusting the rocker. The shooting environment is relatively dim and needs to increase brightness. When the flash cannot work, the exposure can be compensated and the exposure can be appropriately increased. "而且。故事发生在香港回归后。香港姑娘阿玲和雨虹是一对好朋友。在亚洲金融风暴冲击下，大学生阿玲休学来到盛威酒店打工，经过历练她从一个普通的员工，成为部门主管；在车行里当推销员的雨虹，又跳槽到服装专卖店做销售员，偶然机会她当了演员，终于成了名，但金融风暴却一夜间让她成了负债者。高家盛是盛泰集团的创始人。他的长子高天泽和雨虹因情感纠缠在一起，雨虹终于嫁入了豪门。而次子高天瑞和阿玲从相拒、相近、相知直到成为生活和事业中的伴侣。由于雨虹和高天泽的陷害，阿玲离开了盛威酒店，重新开始了办小旅行社的创业生涯。高家盛临终前把盛泰集团交给了高天瑞和阿玲，而雨虹和高天泽使尽了阴谋，在法庭上进行所谓的“家产之争”，结果他们失败了。惨痛的经历使他们反思，从而走向人性的回归。古北口有云姓世家历代务矿，所产五金，远近著名，云鹏排行第三，人称云三少，娶美妇柳若水，一对璧人无不羡慕。一日尼姑庵传出命案，一寄居潇湘女竟无疾而终，仵作刁五门检验无着，幸佟林观察入微，由其双足之抽出两尺长金针各一支，针头有剧毒，毒攻心房，遂告不治，涉嫌者乃名医麦青山，盖因古北口能使针以取人性命者，惟麦青山而已2017-07-15 14:38:31Listening to the elderly, Ms. Ping learned that the use of herbal medicine as a dyeing agent dates back to when people first accurately discovered that boiled plants would paint cotton or stain yarn; Realizing this, they begin using these solutions to alter the aspect of their closures, and they experienced this with variable plants, flowers, and roots.Visitor pattern decouples the data structure from the operations acting on the structure, making the operation set relatively free to evolve. Visitor pattern is suitable for systems with relatively stable data structure and easy change of algorithm. Because visitor mode makes it easy to increase algorithm operation. If system data structure objects are easy to change and new data objects are often added, visitor mode is not suitable. The advantage of visitor mode is that it is easy to add operations, because adding operations means adding new visitors. Visitor mode centralizes the relevant behaviors into one visitor object, and its changes do not affect the system data structure. Its disadvantage is that it is difficult to add new data structures. -From Encyclopedia