以下哪些措施可以增强辐射换热 A: 提高发射率(increase emissivity) B: 降低发射率(decrease emissivity) C: 提高角系数(increase view factor) D: 降低角系数(decrease view factor) E: 辐射遮热罩\板(radiation shield)

以下哪些措施可以削弱辐射换热 A: 提高发射率(increase emissivity) B: 降低发射率(decrease emissivity) C: 提高角系数(increase view factor) D: 降低角系数(decrease view factor) E: 辐射遮热罩板(radiation shield)

The main reason why air-conditioner indoor machines can have multiple colors is A: The difference in emissivity of different colors paints at room temperature is small B: The emissivity of different colors paints varies greatly at room temperature C: The absorptance of different colors paints to visible light is quite different at room temperature D: The difference in the absorptance of different colors paint to visible light at room temperature is small