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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“那段历史表明，（当时的）华人是被仇恨的资产阶级和资本主义系统的台柱。”这并非杜耀豪的判断，而是他从家族长辈的遭遇和史料阅读中归纳出的、那个时代加诸越南华裔群体的标签。正是这个标签，成为家族命运分岔的起点。。关于这个话题，搜狗输入法下载提供了深入分析