单选题Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to（）.Areduce electrolytic action on heat exchanger metalsBkeep heat transfer surfaces shiny and cleanCprevent rapid accumulation of marine growthDprovide a protective coating on heat exchanger surfaces
单选题
Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to（）.
A
reduce electrolytic action on heat exchanger metals
B
keep heat transfer surfaces shiny and clean
C
prevent rapid accumulation of marine growth
D
provide a protective coating on heat exchanger surfaces
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