检查各种门、窗、人孔盖、烟囱百叶窗、舱口盖操作的便利性和可靠性。检测烟囱百叶窗的闭合性。
Inspect the convenience and reliability of all kinds of doors, Windows, manhole covers, hatch. Inspect the closing of louver of funnel.
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关闭所有盲法兰盖、并检查各个孔和人孔。
Close all blind flanges, inspection holes and manholes.
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