507.Block to block time is the amount of elapsed time between an aircraft leaving the departure ramp for the purpose of flight and its reaching the arrival ramp at the end of the flight( )

430.This will be limited to the forward and aft edges of the windshield due to the bottom edge not being visible and the top edge having the bus bar in the way( )

429.The writing rules cover aspects of grammar and style The dictionary gives the general words that a writer can use( )

428.YOU [ ] USE EAR PROTECTION WHEN YOU ARE NEAR AN ENGINE THAT IS IN OPERATION ( )

427.Make sure that the arrow points in the direction of the fuel flow( )

426.底漆层厚度必须介于 05 毫米到 06 毫米之间。( )

425.Use an oil can to lubrication the turnbuckle ( )

424.Vertical pages rather than horizontal are preferred for all types of publication ( )

423.Replace nuts and washers if removed during inspectionDo not reuse ( )

422.将旁通活门和排放活门同时拆解。 ( )

421.The slow moving , high pressure air from the compressor is fed into the combustor or burner where it is mixed with a highly flammable fuel and ignited( )