Which interfaces are used for prepressurization and pressurization sequence initialization?

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. AC ESS Bus is supplied by the EMERG GEN.

B. AC ESS Bus is supplied by AC Bus 1.

C. AC ESS Bus is supplied by AC Bus 2.

A. To relieve hydraulic pressure to the return manifold.

B. To relieve excessive air pressure to the atmosphere.将过压释放到大气

C. To provide overpressure to the ECAM.

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. As soon as at least one AP is engaged.

B. As soon as A/THR is engaged.

C. As soon as electrical power is available.

A. VOR/MKR receiver 2.

B. VOR/MKR receiver 1.

C. VOR/MKR receivers 1 and 2.

A. With 0 ULD.

B. With 2 ULDS.

C. With 3 ULDS.

A. Only on the ECAM STATUS page .

B. In the LAST LEG REPORT, the AVIONICS STATUS and the ECAM STATUS page .航后报告/航空电子设备状态和ECAM状态页

C. Class 2 failures are only displayed in flight.

A. N°3 （dual bearing）and N°4.

B. N°2 and N°4.

C. N°2 and N°3 （dual bearing）.

A. Prevent fuel entering the vent lines.防止燃料进入排气管道

B. Allow fuel to drain from the vent lines.

C. Maintain the fuel tanks pressurized.