Every new crude oil tanker of 20000 tons deadweight and above shall be fitted with a cargo tank cleaning system using（）.<br>A:hot water<br>B:cold water<br>C:chemicals<br>D:crude oil washing

Every new crude oil tanker of 20000 tons deadweight and above shall be fitted with a cargo tank cleaning system using（）.
A:hot water
B:cold water
C:chemicals
D:crude oil washing

出自：海船船员证

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