The chord line and effective camber of the stabilizer are changed by deflection of the _______ .
A.elevator
B.rudder
C.stabilator
D.either A or B
正确答案是D
The chord line and effective camber of the stabilizer are changed by deflection of the _______ .
A.elevator
B.rudder
C.stabilator
D.either A or B
正确答案是D