A stall is caused by the separation of airflow _______ .
A.from the wing’s lower surface
B.at the trailing edge of the wing
C.from the wing’s upper surface
D.at the leading edge of the wing
正确答案是C
A stall is caused by the separation of airflow _______ .
A.from the wing’s lower surface
B.at the trailing edge of the wing
C.from the wing’s upper surface
D.at the leading edge of the wing
正确答案是C