The ground Cart is running and switched on, the EXT PWR pushbutton is pressed in and there is no indication.
What does that configuration mean ?

A. To depressurize the fuel system at engine shut-down.

B. To provide better fuel filtering.

C. To maintain IDG oil, engine oil and fuel temperature within limits.

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. The muting circuit always mutes the audio output.

B. The muting circuit is operative only with the hand microphone selection.

C. The muting circuit is operative when any microphone.

A. ECAM-FADEC

B. ECAM-CFDS

C. CFDS-ACARS

A. By depressurizing the hydraulic system and using the maintenance unlocking device.

B. By pressing the SEC p/b on the flight control panel.

C. By using the maintenance unlocking device with the actuator pressurized and SEC p/b operated.

A. To record radio communications during take off and landing.

B. To record crew conversations as soon as an incident occurs.

C. To record crew conversations and communications.

A. As soonas a directional valve is energized.

B. When the control valve is in full speed position.

C. Always.

A. To ventilate the avionices equipment

B. To ensure the heating of the avionics bay

C. To avoid avionics bay structural damage

A. To the ELACs and SECs.

B. Only to the FCDCs.

C. To the ELACs.

A. As soon as the selector lever is moved to neutral.

B. As soon as the airspeed is greater than 260 ±5 kts.

C. As soon as the last door is closed.