472.飞机在地面时,溢流活门处于什么位置( )The aircraft is on the ground, the overboard valve position is( )

　全关Full closed

　全开Full open

　半开 Partial opening

正确答案：B

解析：

题目解析飞机在地面时，溢流活门的位置是“全开”（Full open）。这是因为地面上飞机的气压与高空中相比较低，所以需要将溢流活门完全打开，以确保机内外的气压平衡。

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A330机型熟悉课程试题

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230.关于起落架下锁描述正确的是( )which description for the down lock of landing gear is correct?

229.关于起落架的描述正确的是( )which description of the landing gear is correct?

228.ECAM的WHEEL页面上显示琥珀色的”L/G CTL”说明什么情况 what meaning of the ECAM WHEEL page shows the amber “L/G CTL” is?

227.ECAM上WHEEL页面什么时候自动显示及消失( )when do the WHEEL page which on ECAM automatic display and disappear?

226.起落架系统包含哪些子系统( )which subsystem includes the landing gear system ?

225.前轮转弯控制盒位于?( )the wheel steering control box is located?

224.主架是几级减震支柱?( )how many stage do the main landing gear shock absorber have?

223.备用刹车系统双活门位于( )?Alternate brake system double valve is located:

222.停留刹车手柄位于( )Parking brake lever is located:

221.BSCU位于哪个位置( )BSCU is located :