单项选择题 How many PPM of the oily water can be pumped out within 12 miles along the China coast line?（）.

单项选择题 How is the Master or operator of a vessel required to keep the crew informed of the regulations concerning the discharging of garbage overboard?（）.

单项选择题 Biodegradation of the oil slick in sea water is assisted by all the following marine micro-organisms which are capable of metabolising oil compounds except（）.