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.
当出现“紧急”情况时，通常是需要立即快速反应的故障，如整个发动机故障、起火或冒烟，或者可能是客舱 压力迅速下降。
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.正确答案A
