单项选择题
A.plastics
B.comminuted or ground papers, rags, glass, metal etc
C.food waste comminuted or ground
D.Incinerator ash
单项选择题 Which of the following methods can not remove the non-separable emulsified oil in bilge water?（）
单项选择题 Which of the following methods might favor oil emulsion in bilge water?（）
单项选择题 What’s the advantage of oily water separator that meets the requirement of MEPC 60(33) over MEPC 107(49)?（）