A. 正确 B. 错误
A. 纵向协调 B. 横向协调 C. 纵横交叉的综合协调 D. 全面有重点的协调
A. the base of the expansion trunk B. the base of the ullage port C. a line scribed within the ullage port D. an above-deck datum,usually the top of the ullage hole