_______ is the upward force created by the effect of airflow as it passes over and under the wings.
A.Lift
B.Drag
C.Thrust
D.Weight
正确答案是A
_______ is the upward force created by the effect of airflow as it passes over and under the wings.
A.Lift
B.Drag
C.Thrust
D.Weight
正确答案是A