ATPL网上题库4飞行原理 下载本文

(88)How will the airspeed indicator react if the ram air input to the pitot head is blocked by ice, but the drain hole and static port are not?

? ? ?

A.Indication will drop to zero.

B.Indication will rise to the top of the scale. C.Indication will remain constant but will increase in a climb.

正确答案:A

(89)Which is a purpose of the leading-edge flaps?

? ? ?

A.Increase the camber of the wing.

B.Reduce lift without increasing airspeed. C.Direct airflow over the top of the wing at high angles of attack.

正确答案:A

(90)The Krueger flap extends from the leading edge of the wing, increasing its

? ? ?

A.angle of attack B.camber C.energy

正确答案:B

(91)The use of a higher flap setting for takeoff will

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A.Lengthen both the takeoff run and the second and third takeoff climb segments.

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B.Shorten the takeoff run and the second but lengthen the third takeoff climb segment.

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C.Shorten the takeoff run but lengthen the second and third takeoff climb segments.

正确答案:C

(92)Why must the angle of attack be increased during a turn to maintain altitude?

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A.Compensate for loss of vertical component of lift

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B.Increase the horizontal component of lift equal to the vertical component

?

C.Compensate for increase in drag

正确答案:A

(93)To avoid the wingtip vortices of a departing jet airplane during takeoff, the pilot should

?

A.Lift off at a point well past the jet airplane's flight path.

?

B.Climb above and stay upwind of the jet airplane's flight path.

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C.Remain below the flight path of the jet airplane.

正确答案:B

(94)What effect would a light crosswind have on the wingtip vortices generated by a large airplane that has just taken off?

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A.The upwind vortex will tend to remain on the runway longer than the downwind vortex.

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B.A crosswind will rapidly dissipate the strength of both vortices.

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C.The downwind vortex will tend to remain on the runway longer than the upwind vortex.

正确答案:A

(95)What flight condition should be expected when an aircraft leaves ground effect?

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A.An increase in induced drag requiring a higher angle of attack.

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B.A decrease in parasite drag permitting a lower angle of attack.

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C.An increase in dynamic stability.

正确答案:A

(96)A definition of the term \hydroplaning\is where

? ?

A.the airplane rides on standing water. B.a film of moisture covers the painted or rubber-coated portion of the runway.

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C.the tires of the airplane are actually riding on a mixture of steam and melted rubber.

正确答案:B

(97)What is the best method of speed reduction if hydroplaning is experienced on landing?

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A.Apply full main wheel braking only. B.Apply nosewheel and main wheel braking alternately and abruptly.

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C.Apply aerodynamic braking to the fullest advantage.

正确答案:C