How many PPM of the oily water can be pumped out within 12 miles along the China coast line?（）.<br>A:at least 15 PPM<br>B:about 15 PPM<br>C:up to 15 PPM<br>D:no less than 15 PPM

How many PPM of the oily water can be pumped out within 12 miles along the China coast line?（）.
A:at least 15 PPM
B:about 15 PPM
C:up to 15 PPM
D:no less than 15 PPM

出自：海船船员证

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