单项选择题能正确解释黑体辐射实验规律的是 ( )。 A. 能量的连续经典理论 B. 普朗克提出的能量量子化理论 C. 牛顿提出的能量微粒说 D. 以上说法均不正确
单项选择题_____ purchasing power parity states that the difference between changes over time in product-price levels in two countries will be offset by the change in the exchange rate over this time.( )A.FullB.PartialC.RelativeD.Absolute