The primary flight controls consist of the ________ailerons(副翼), elevators, and ________(方向舵).
A.flap, rudder;
B.slat,rudder;
C.ailerons, tail;
D.ailerons,rudder;
正确答案是D
The primary flight controls consist of the ________ailerons(副翼), elevators, and ________(方向舵).
A.flap, rudder;
B.slat,rudder;
C.ailerons, tail;
D.ailerons,rudder;
正确答案是D