If the jacket water temperature of an operating diesel engine suddenly rises above normal

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If the jacket water temperature of an operating diesel engine suddenly rises above normal, the cause can be attributed to _____.

A.an overfilled expansion tank

B.excess chromate treatment of the jacket water

C.a clogged raw water sea suction

D.cavitation erosion of the heat exchanger tubes

请帮忙给出正确答案和分析,谢谢!

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