Helium is used to pressurize tanks and help push fuel into the engines. Without proper helium flow, the rocket cannot safely fly. Because the upper stage is hard to reach at the launchpad, NASA rolled the stacked rocket back into the Vehicle Assembly Building, the sky-scraping hangar where it was originally put together.
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都说“新官上任三把火”。当年，习近平同志到浙江工作不久，有人请他谈谈“施政纲领”。他笑着说：“我刚刚来，还没有发言权。到时候，我是要说的。”
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