AC STANDBY BUS（交流备用汇流条）向重要的AC系统提供：

THE APU AC GENERATOR:

FUEL PRESSURE IS USED TO OPERATE:

ON GROUND, THE NORMAL APU N(RPM), EXCEPT DURING ENGINE START, IS:

THE AUXILIARY POWER UNIT (APU) PROVIDES:

APU OPERATION IS CONTROLLED AND MONITORED BY THE:

DURING APU SHUTDOWN THE FUEL IN THE PILOT FUEL INJECTORS AND MANIFOLD IS PURGED:

THE MAIN LANDING GEAR DOORS ARE MADE OF:

THE ENGINE IS ATTACHED TO THE PYLON BOX BY:

THE CABIN WINDOW SET HAS:

IN THE COCKPIT, THERE ARE: