Anytime the pilot moves the control column fore or aft during flight, he changes _______ .
A.the angle of attack
B.the coefficient of lift
C.the lift
D.all the above
正确答案是D
Anytime the pilot moves the control column fore or aft during flight, he changes _______ .
A.the angle of attack
B.the coefficient of lift
C.the lift
D.all the above
正确答案是D