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Lower cargo compartment door seal cracked,cockpit and cabin steadily decompressed,passengers have been provided with (  ) masks,CCA981. 航空器驾驶员报告紧急下降的原因,下货舱门密封件破裂,驾驶舱和客舱逐渐减压,旅客已献上氧气面罩

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    Lower cargo compartment door seal cracked,cockpit and cabin steadily decompressed,passengers have been provided with (  ) masks,CCA981. 航空器驾驶员报告紧急下降的原因,下货舱门密封件破裂,驾驶舱和客舱逐渐减压,旅客已献上氧气面罩

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