单选题In the process of the stand-by, warm-up the engine usually through give preheat of which parts of the diesel engine?()Acooling water of the cooling systemBfuel of the FO systemCLO of the LO systemDcooling water of the cooling system and LO of the LO system
单选题
In the process of the stand-by, warm-up the engine usually through give preheat of which parts of the diesel engine?()
A
cooling water of the cooling system
B
fuel of the FO system
C
LO of the LO system
D
cooling water of the cooling system and LO of the LO system
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