下列哪一项不属于CDFA技术的优势？Which of the following is not advantage of CDFA？
A.免除飞行员监控飞机的负担。rid the pilot of the responsibility to monitor aircraft
B.提高飞行员情景意识并减少工作负荷。improve the situation awareness and reduce work load
C.减少大推力状态下的低空平飞时间，提高燃油效率、降低噪音；reduce fly time on low level with great thrust,is fuel efficient and reduce noises
正确答案是A