飞机上会有很多的规则，就算是座位也是有一定的区分，不同的座位会有不一样的待遇，更多的就是在价钱上面的区分，价格越高服务就会越好，那么商务舱和公务舱的区别是什么呢?
I\'m working with a device that sends back an image, and when I request an image, there is some undocumented information that comes before the image data.I was only able to realize this by looking thr
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