If they have time, astronauts and cosmonauts will look to plug the leak or close the hatch to the leaking section of the station. (That is how they dealt with a minor leak in the station’s PrK module for a number of years, and it basically worked.) Remember, though, that this is the worst-case scenario, and our crew will run into a hard deadline. Once pressure falls to around 490 mm Hg, NASA says, critical systems risk breaking down. Astronauts could suffer hypoxia, oxygen deprivation so debilitating they could become delirious. It will be a heart-wrenching call, but if nothing else can be done, the crew will need to go to their crew vehicles and leave the ISS.
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刘成的女儿早产,曾住进保温箱十天,出院后又因黄疸、肺部发育不良持续随访。儿童保健时,被检出患有先天性心脏病。没有户口,孩子无法办理医保,也无法购买商业保险,看病只能全额自费。
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