光垂直入*到平面鏡上，反*角為········································...

問題詳情：

光垂直入*到平面鏡上，反*角為····································································· ( 　 )

A.0°                     B.30°                   C.45°                   D.90°

【回答】

A

知識點：未分類

題型：未分類