DDA/H是指？DDA/H indicates？
A.决断高度/高。decision altitude/height
B.最低下降高度/高。minimum descend altitude/height
C.特定决断高度/高。derived decision altitude/height
正确答案是C
DDA/H是指？DDA/H indicates？
A.决断高度/高。decision altitude/height
B.最低下降高度/高。minimum descend altitude/height
C.特定决断高度/高。derived decision altitude/height
正确答案是C