Question id 220 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license

Internal Airflow Mass Divided By The Fuel Flow Mass
Internal airflow mass divided by the external airflow mass
Fuel flow mass divided by the internal airflow mass
External airflow mass divided by the internal airflow mass

Training tests and timed exam simulations ATPL - Airline Transport Pilot license