A、Permanently.
B、When on batteries only.
C、When one engine generator fails.
答案：B
A、Permanently.
B、When on batteries only.
C、When one engine generator fails.
答案：B
A. Press the CVR ERASE pushbutton for 10 seconds.
B. Press the GND CTL pushbutton,make sure that parking brake is applied and press the CVR ERASE pushbutton for 2 seconds.
C. Start at least one engine and press on the GND CTL pushbutton for 2 seconds.
A. Two stage centrifugal compressor design.
B. Signle stage centrifugal compressor design.
C. Three stage axial compressor design.
A. 3 monitor stations.
B. 5 monitor stations.
C. 4 monitor stations and one master control station.
A. In the cutouts of the ceiling panels.
B. In the fixed partition walls.
C. In the cutouts of the ceiling panels and lateral right sidewall linings.
A. To prevent slat asymmetry.
B. To prevent slat loss.
C. To prevent structure overload.
A. On ground only.
B. On ground and in flight.
C. In flight only.
A. To pressurize the reservoir.
B. To check the flignt controls.
C. To operate the cargo doors.
A. The operating striker lever has to be replaced.
B. The diaphragm, in the mechanism housing, and the shear pin must be replaced.
C. The nitrogen bottle has to be replaced.
A. By setting the leak measurement valve to OFF and operating the electric pump
B. By pressurizing the yellow system by using the PTU.
C. By setting the leak measurement valve to OFF, and manually open the LH wing spool valve.
A. Recording of the mandatory flight data requested by the airworthiness authority.由适航性授权所要求的强制飞行数据的记录
B. Trouble shooting of avionics computers only.航空电子计算机的故障问题
C. Engine condition, APU condition and aircraft performance monitoring.发动机状况，APU状态和飞机性能监测
