每次飞行都要注意聆听服务人员演示的安全指导。
Listen to each flight service personnel should pay attention to the safety demo guide.
加拿大直升机笔试指导：理论飞行常识科 ；
Canadian Helicopter Written Test Guide: Theory of Flight, General Knowledge Section ;
加拿大直升机笔试指导：理论飞行常识科 ；
Canadian Helicopter Written Test Guide: Theory of Flight, General Knowledge Section ;
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