What is the basic role of the DMCs ?

A. Yes.

B. No.

A. It is impossible to engage the autopilot.

B. Engines running, it is impossible to engage the autopilot.

C. Engines shut down, it is impossible to engage the autopilot

A. On ARINC 429 and ARINC 453 buses

B. On Master DSEL and ARINC 453 buses

C. On ARINC 453 and Digital buses

A. On the right side fan cowl door.

B. On the left side fan cowl door.

C. On the left side thrust reverser "C" duct door.

A. Switch over to0 the other channel.

B. Control goes to a fail-safe position.

C. The channel in control supplies the winding of the other channel.

A. Portable extingguisher.

B. Fire bottle.

C. Waste bin fire extinguisher

A. RA 2 provides data to the GPWC.

B. FMGC 1 provides data to the GPWC.

C. The GPWC no longer receivs Radio Altitude.

A. Reception of a ground message.

B. Reception of a voice communication demand with the ground.

C. Loss of communication with the ground.

A. The DC essential bus.

B. The service bus.

C. The hot battery bus.

A. Yes, wing tank pumps are always runing

B. No, only when center tank is empty

C. No, because of center tank pump priority