An electric heater built into some smaller diesel engines is used to _____.A.raise lube oi

An electric heater built into some smaller diesel engines is used to _____.

A.raise lube oil viscosity for easier starting in cold weather

B.increase air inlet temperature

C.increase compression ratio

D.increase jacket water temperature for easier starting in cold weather

请帮忙给出正确答案和分析，谢谢！

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