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.
'properties': {。业内人士推荐safew官方版本下载作为进阶阅读
give the same smug lectures about "safety" we have all heard dozens of times before。夫子对此有专业解读
Раскрыты подробности о договорных матчах в российском футболе18:01