What is the main function of the APU ?

A. The RAM Air Turbine (RAT) is extended.

B. The emergency generator comes on line.

C. The RAT is extended and the emergency gennerator comes on line.

A. Brake Selector Valve.

B. Throttle Valve.

C. Automatic Selector.

A. The pilot interface with the Flight Management function of the FMGC.

B. The aircraft interface between the Flight Management and Flight Guidance funtions of the FMGC.

C. An independent means of controlling the aircraft in marual flight.

A. Only the ELACs.

B. The ELACs and the SECs.

C. The FCDCs

A. To ease the draining operation.

B. To warm up the water.

C. To allow water distribution.

A. Pitch control is automatically transferred to ELAC 1.

B. Pitch control is automatically transferred to SEC 1 and SEC 2

C. Pitch control is lost.

A. Ram air for both compartments.

B. Fan air for both compartments.

C. Ram air for the fan compartments and fan air for the core compartments.

A. One main frame computer for all engines.

B. The ECU and its peripherals, per engine.

C. A signle ECU and its peripherals, for both engines.

A. To be connected in parallel.

B. To be supplied by any generator or external power.

C. To be supplied by APU GEN or EXT PWR only.

A. To interconnect the two chambers of the steering actuator.

B. To apply hydraulic pressure to the servovalve.

C. To bypass the servovalve in case of BSCU failure.