The greatest wake turbulence danger is produced by large aircraft operating at _______ .
A.low speeds and high angles of attack
B.high speeds and low angles of attack
C.low altitudes and high speeds
D.high altitudes and low speeds
正确答案是A
The greatest wake turbulence danger is produced by large aircraft operating at _______ .
A.low speeds and high angles of attack
B.high speeds and low angles of attack
C.low altitudes and high speeds
D.high altitudes and low speeds
正确答案是A