While the rocket is inside, technicians will remove and inspect suspected helium system components, update any faulty hardware, and perform other work. That includes replacing batteries in the flight termination system — the emergency system that can destroy the rocket if it strays off course — swapping out a seal on the line that feeds liquid oxygen into the rocket, refreshing items inside Orion, and giving the closeout crew more practice sealing the capsule.
so much texture: DES's origins in the ATM, the 3624 PIN format, the dumb，这一点在WPS下载最新地址中也有详细论述
。夫子对此有专业解读
腾讯元宝使用指南 图源：元宝官方，推荐阅读旺商聊官方下载获取更多信息
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