For this story, WIRED reviewed dozens of NASA documents, including backup plans and contingencies for emergencies, and spoke to more than a dozen people, including three astronauts who’ve visited the ISS, and no one seemed that freaked out. One astronaut said the most worrisome scenario that actively crossed his mind in orbit was getting a toothache. The ISS has had some emergencies, including a first-ever medical evacuation in January, but generally things have been remarkably stable. In fact, one of the most impressive things about the ISS is that nothing very dramatic has ever happened to it. No experiment has gone too haywire. It hasn’t been hit by an asteroid.
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千亿、百亿和十亿研发投入规模区间企业合计379 家，合计研发投入约1.94 万亿元，企业数量占比不到一成，却贡献了整体研发投入的七成以上（71.52%）。这一占比较上年（70.68%）继续增加。，推荐阅读heLLoword翻译官方下载获取更多信息
Discover all the plans currently available in your country。业内人士推荐safew官方版本下载作为进阶阅读