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Bezos narrates a video about the BE-4 rocket engine: It uses oxidizer-rich staged combustion. … The test program is going very well, the team’s doing a great job.
Besides an existing research and development center in Shanghai, Tigerobo is scheduled to set up another two R&D centers — in Beijing and Silicon Valley in the United States.
Bezos said that “ for a book is too expensive,” and noted how books don’t just compete with other books in terms of time spent for a consumer — they compete with reading news articles, playing video games, watching TV, going to the movies, etc.
Biden, Harris kick off 2020 campaign - World - Chinadaily.com.cn
Between Tuesday and Thursday, ARJ21 will fly several routes between eight airports, including Kunming, Lijiang and Dali airports in Yunnan province. During the period, Commercial Aircraft Corp of China, its developer, also held a seminar with its customers to discuss the operations and potential of China's highland aviation regional market.
