单选题 1分

Which of the listed effects would mixtures of ethylene glycol have on the cooling system of a diesel...

Which of the listed effects would mixtures of ethylene glycol have on the cooling system of a diesel engine? I. Protests the coolant from freezing II. Protects metallic surfaces from corrosion
  • A. I only
  • B. II only
  • C. Both I and II
  • D. Neither I nor II

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