The _____（断开） position is the normal _____(巡航) mode and all landing gear are locked up and depressurized.
A.down, space
B.OFF，cruise
C.off, disarm
D.up, cruise
正确答案是B
The _____（断开） position is the normal _____(巡航) mode and all landing gear are locked up and depressurized.
A.down, space
B.OFF，cruise
C.off, disarm
D.up, cruise
正确答案是B