The cool air of the precooler is:A、from the ram air duct.B、from the engine fan airC、from the turbine fan air.D、none of the above-易过题库-题库最全的搜题网站

The cool air of the precooler is:

Afrom the ram air duct.

Bfrom the engine fan air

Cfrom the turbine fan air.

Dnone of the above

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