从撞击开始计算，30秒后飞机降落跑道，同时机组人员抚慰乘客情绪，确认可以避难的通道和舱门；3分48秒后机舱内出现烟雾；6分20秒后打开舱门，避难开始；7分30秒后绝大部分乘客完成逃生。
此后机长继续留在机舱内，一排一排座位确认有没有无法独立逃生的乘客，并成功发现解救几位；撞击发生后的18分钟，机长在确认完所有人员顺利避难后，自己完成逃生。两分钟后，飞机舱内燃起熊熊大火。 source
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Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”
The messaging service and social-media platform owes creditors roughly $700 million by the end of April, according to people briefed on the company’s plans and loan documents viewed by The Wall Street Journal. At the same time, Telegram Group Inc. must cover rising equipment and bandwidth expenses because of its rapid growth, despite going years without attempting to generate revenue.
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