Which of the following represents the maximum percent of oxygen by volume required to be achieved by a ship’s inert gas system, prior to the commencement of crude oil tank washing?（）<br>A:6%<br>B:8%<br>C:10%<br>D:12%

Which of the following represents the maximum percent of oxygen by volume required to be achieved by a ship’s inert gas system, prior to the commencement of crude oil tank washing?（）
A:6%
B:8%
C:10%
D:12%

出自：海船船员证

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