：理想气体绝热向真空膨胀，则:（）A:ΔH = 0，ΔU = 0B:ΔS = 0，W = 0 C:ΔG = 0，ΔH = 0D:ΔU = 0，ΔG = 0答案: ΔH = 0，ΔU = 03、