当ND显示红色圆圈和“MAPNOTAVAIL”(地图不能用)信息时,发生了什么情况()
A、MCDU故障
B、FMGC给出的飞机位置无效
C、发动机不工作
D、以上都不对
参考答案:B
— Is this ______ backpack?
— No, it isn't. It's ______ backpack. [ ]
A. he, my
B. his, I
C. her, his
D. she, your