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单选题
前起落架舱门是：Nose gear doors are:
A
机械的且当轮放下时保持打开。Mechanical and remain open when gear are down.
B
液压的且当轮放下时保持关闭。Hydraulic and remain closed when gear are down.
C
飞机没有前起落架舱门。Aircraft has no nose gear doors.
D
气源的Pneumatic.
答案解析
正确答案：A
题目纠错
飞机试题CRJ900题库练习
