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【单选题】
以下描述急速型失压正确的是 ( )A.
急速型失压是指逐渐失去客舱压力
B.
急速型失压是指迅速失去客舱压力
C.
急速型失压可能是因为机门或应急窗的密封泄漏而引起的
D.
急速型失压可能是因为增压系统故障而引起的
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