弥漫性增生性甲状腺肿(diffuse proliferative goiter)

产生焦散的物体的漫反射diffuse（）。

A:越大越好 B:越小越好 C:随便 D:实际情况实际来定

Please describe the structural and functional distinction of specific projection system and diffuse projection system. (8 Points)

Please describe the structural and functional distinction of specific projection system and diffuse projection system. (8 Points)

Please describe the structural and functional distinction of specific projection system and diffuse projection system. (8 Points)

Please describe the structural and functional distinction of specific projection system and diffuse projection system. (8 Points)