757.Ifit is snow, make sure that the vehicle is in the correct configuration ( )

180.大多数军用和商用飞机使用涡扇发动机 ( )

179.Head up into the wind( )

178.Jack was down in the mouth because he missed his plane ( )

177.释放高温大翼防冰气体会导致人员受伤。( )

176.确保探头的温度升高到超过 500 摄氏度。( )

175.If the instructions give a warning about dangerous pressure, do not open the container ( )

174.通过三个循环操作作动筒 ( )

173.The girt bar attached to the escape slide which engages brackets on the floor for automatic slide operation when the doors are opened ( )

172.The document points out that the FAA should be contacted prior to any alterations on airplane to insure that airworthiness of the airplane is not violated( )

171.巡航性能显示的格式由飞机制造商决定。( )