题目内容

以下说法正确的有：

A. 黑体单位表面发出的辐射能在空间不同方向的分布是均匀的。
B. 漫射体在其法线方向具有最大定向辐射强度。
C. 从黑体表面1发出的辐射能落在黑体表面2上，则落在黑体表面2上的辐射能大小与黑体表面1对黑体表面2所张立体角的大小有关。
D. 满足兰贝特定律的物体表面，其定向辐射强度与空间方向无关。

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An intermediary

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