水体的光学特性取决于：
The optical property of a water body depends on:
A、溶解物质的吸收
Absorption by the dissolved material
B、悬浮颗粒物质的吸收
Absorption by the suspended particulate matter
C、悬浮颗粒物的散射
Scattering by the suspended particulate matter
D、以上所有
All of these