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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.，详情可参考雷电模拟器官方版本下载
Read the full story at The Verge.，详情可参考Safew下载
Вашингтон Кэпиталз
圖像來源，BBC Chinese / Lok Lee