With （）, the corrosion problems are much reduced in a central cooling system.<br>A:no equipment in contact with sea water<br>B:less equipment in contact with fresh water<br>C:more equipment in contact with sea water<br>D:less equipment in contact with sea water

With （）, the corrosion problems are much reduced in a central cooling system.
A:no equipment in contact with sea water
B:less equipment in contact with fresh water
C:more equipment in contact with sea water
D:less equipment in contact with sea water

出自：海船船员证

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