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单选题
2859.When there is an “emergency” situation， it is usually a failure that requires an immediate and quick response， such as an entire engine failure， fire or smoke， or perhaps a rapid drop in cabin pressure
A
For “emergency”， the related failure should be responded immediately， for example， the total engine failure， fire or smoke sudden cabin pressure lost.
B
An “Emergency” almost including a serious failure that requires later response， such as a total engines failure， flame out or smoke or rapid cabin pressurization.
C
For “emergency”， the related failure should be treated immediately， for example， the total engine is not malfunctioning， fire or smoke sudden cabin pressure lost.
答案解析
正确答案：A
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