[交规考试]atpl网上题库4飞行原理

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1、4，飞行原理(1)Howcanthestabilityoftheatmospherebedetermined?·A．Ambienttemperaturelapserate.·B．Atmosphericpressureatvariouslevels.·C．Surfacetemperature/dewpointspread.正确答案：A(2)____preventsairflowingdirectlyfromthehighpressureareatolowpressureareawhenairmovesinaleveldirection.·A．Frictionforce.·B．Inertia

2、lcentrifugalforce.·C．Coriolisdeflectingforce.正确答案：C(3)Onepurposeofhigh-liftdevicesisto·A．increasetheloadfactor.·B．delaystall.·C．increaseairspeed.正确答案：B(4)Theprimarypurposeofhigh-liftdevicesistoincreasethe·A．L/Dmax.·B．Liftatlowspeeds.·C．Dragandreduceairspeed.正确答案：B(5)Airflowseparationoverthewingca

3、nbedelayedbyusingvortexgenerators·A．directinghighpressureairoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.·B．directingasuctionoverthetopofthewingorflapthroughslotsandmakingthewingsurfacesmooth.·C．makingthewingsurfaceroughand/ordirectinghighpressureairoverthetopofthewingorflap

4、throughslots.正确答案：C(6)Describedynamiclongitudinalstability.·A．Motionaboutthelongitudinal.·B．Motionaboutthelateralaxis.·C．Motionabouttheverticalaxis.正确答案：B(7)Identifythetypestabilityiftheaircraftattituderemainsinnewpositionafterthecontrolshavebeenneutralized.·A．Negativelongitudinalstaticstability·

5、B．Neutrallongitudinaldynamicstability·C．Neutrallongitudinalstaticstability正确答案：C(8)Identifythetypestabilityiftheaircraftattitudetendstomovefartherfromitsoriginalpositionafterthecontrolshavebeenneutralized.·A．Negativestaticstability·B．Positivestaticstability·C．Negativedynamicstability正确答案：A(9)Iden

6、tifythetypestabilityiftheaircraftattitudetendstoreturntoitsoriginalafterthecontrolshavebeenneutralized.·A．Positivedynamicstability.·B．Positivestaticstability.·C．Neutraldynamicstability.正确答案：B(10)Whatisacharacteristicoflongitudinalinstability?·A．Pitchoscillationsbecomingprogressivelygreater.·B．Ban

7、koscillationsbecomingprogressivelygreater.·C．Aircraftconstantlytriestopitchdown.正确答案：A(11)Iftheairplaneattituderemainsinanewpositionaftertheelevatorcontrolispressedforwardandreleased,theairplanedisplays·A．neutrallongit