212.What is the function of the hood absorption system ?

　To add oxygen to the expired gas.

　To trap the carbon dioxyde contained in the expired gas.

　To allow the expired gas to flow out of the hood.

正确答案：B

A320机型英语知识练习

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449.What happens with the aircraft electrical network normally supplied,and the AC ESS FEED pushbutoon released out ( )?

448.In the normal configuration which of the following supplies the ACESS Bus ?

447.What are the RAT solenoids supplied by ?

446.How is the RAT extension system controlled ?

445.Where is the APU generator oil outlet temperature signal sent to?

444.When does the APU GEN FAULT light come on ?

443.What is the configuration if both BTCs are closed ?

442.What is the configuration if BTC 1 is open and BTC 2 is closed?

441.What is the configuration if both BTCs are open ?

440.What happens if a parallel feeder becomes open?