单选题According to Annex Ⅳ of comminuted and disinfected sewage using an approved system can be discharged when the ship is more than away from the nearest land（）A3 n mileB5 n mileC12 n mileD25 n mile
单选题
According to Annex Ⅳ of comminuted and disinfected sewage using an approved system can be discharged when the ship is more than away from the nearest land（）
A
3 n mile
B
5 n mile
C
12 n mile
D
25 n mile
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