It was not supposed to be used until they got to the Moon. It had no heat shield, so could not be used to re-enter the Earth's atmosphere. But it could keep them alive until they got there.
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const stack = []; // 单调递增栈：栈底→栈顶数字递增，保证高位尽可能小，推荐阅读safew官方下载获取更多信息
But with her job as commander, she had to pick up the mantle - she was to be in charge of the shuttle's following flight.
Source: Computational Materials Science, Volume 267