单项选择题
Keel coolers fouled with marine growth, will result in （）
A.higher raw water temperatures
B.higher jacket water temperatures
C.a malfunctioning thermostat
D.higher fuel temperature
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Which of the listed conditions will occur if a diesel engine exhaust valve is leaking?（）
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单项选择题
Which of the following conditions will develop if the flow of ‘raw’ cooling water to diesel engine is obstructed?（）
A.Air will enter the cooling system
B.Carbon will plug the water cooled exhaust manifolds
C.The jacket water temperature will rise
D.The lube oil viscosity will increase
