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?8500.What is ventilating air used for on a combustion heater?

发布于 2021-02-18 22:11:04

【单选题】
A ?Provides combustion air for ground blower.
B ?Carries heat to the places where needed.
C ?Provides air required to support the flame.

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VV8 2023-02-18

把气愤的心境转化为柔和，把柔和的心境转化为爱，如此，这个世间将更加完美。

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