习近平总书记要求，民航企业要树立什么观念，确保航空运行绝对安全？

362 width

361 WHEN THE TEMPERATURE OF THE VENTILATION AIR()TO 27 °C,THE DISCHARGE VALVE OPENS.

360 WE ( ) THAT YOU TORQUE THE BOLTS AGAIN APTER 50 FLIGHT HOURS

359 WARM

358 Vertical lists make long complexsentences much easier to read and understand.

357 Wsed to transmit power to the propeller shaft,if any,and accessory drives.Includes reduction gearing, gear trains, extension shaft and torque-meter.

356 UNUSUAL

355 Under each section, in order of probability,list the unit conditions that may be causing the trouble.

354 True Airspeed is the airspeed ofan airplane relative to undisturbed air which is the CAS corrected for altitude, temperature and compressibility.

353 tow