A、Within five minutes of NAV mode selection when present position has bot been entered.
B、During the alignement phase in case of IRS alignment error.
C、When alignment has been completed.
答案：B
A、Within five minutes of NAV mode selection when present position has bot been entered.
B、During the alignement phase in case of IRS alignment error.
C、When alignment has been completed.
答案：B
A. To the ELACs and SECs.
B. Only to the FCDCs.
C. To the ELACs.
A. The RESET key is used to restart system operation.
B. The RESET key is used to cancel the previous selections.
C. The RESET key is used to cancel all the lighted calls.
A. As the differential pressure between the cabin and the atmosphere is sufficient, the vacuum generator does not operate.
B. As the differential pressure between the cabin and the atmosphere is not sufficient, the vacuum generator does not operate.
C. As the differential pressure between the cabin and the atmosphere is sufficient, the vacuum generator operates.
A. No, it is displayed only in flight.
B. Yes, provided the engines are running.
C. No, it is displayed only in flight with slats and flaps extended.
A. The outflow valve,emergency ram air inlet ,avionics ventilation and pack flow control valve close
B. Only the outflow valve close
C. Only the outflow valve is not automatically controlled to close
A. A level 1 caution.
B. A level 2 caution.
C. A level 3 caution.
A. The Power Transfer Unit.
B. An engine driven pump.
C. An electric pump.
A. The fluid bypasses the filter element.
B. The fluid is stopped;filling is impossible.
C. The filling pressure has to be increased.
A. By the HP rotor.
B. By the LP rotor.
C. By the HP rotor via the transfer gearbox.
A. At the wing tip, outboard of the APPU.
B. Between track 11 and 12, in each wing.
C. Between track 7 and 8, in each wing.
