（） is the circulation and refreshing of the air in a space without necessarily a change of temperature.<br>A:Refrigeration<br>B:Air conditioning<br>C:Ventilation<br>D:Heating

（） 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

出自：海船船员证

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