Most airplanes have a small hinged section at the back of the elevator called _______.
A.anti-servo tab
B.trim tab
C.aileron
D.flap
正确答案是B
Most airplanes have a small hinged section at the back of the elevator called _______.
A.anti-servo tab
B.trim tab
C.aileron
D.flap
正确答案是B