_____ is the circulation and refreshing of the air in a space without necessarily a change

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_____ is the circulation and refreshing of the air in a space without necessarily a change of temperature.

A.Refrigeration

B.Air conditioning

C.Ventilation

D.Heating

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。