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The engine bleed air comes from?

Athe 9th and 5th stages of the engine low stage compressors

Bthe 9th and 5th stages of the engine high stage compressors

Cthe 9th stages of the engine high stage compressors and 5th stages of the engine low stage compressors

Dthe 10th and 7th stages of the engine highstage compressors

正确答案:A (备注:此答案有误)

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