飛機上O既電力係點樣裝備O既呢?

When the aircraft is on the ground, electricity can be provide by two ways:

~ Auxiliary Power Unit (APU), usually in the tail of the aircraft, driving generators to provide electricity

~ Power cable connected from the passenger terminal or ground power cart

When the aircraft is in the air:

~ Normally, each engine drives a generator providing electricity

~ In some cases, such as system failure, the APU will be started in flight to drive its generator

Hope it helps...