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
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相关考题
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单项选择题
Aburned exhaust valve may be detected by a higher than normal （）
A.firing pressure
B.exhaust temperature from a particular cylinder
C.cooling water temperature
D.compression pressure -
单项选择题
In a diesel engine, excessive cylinder liner wear will cause （） Ⅰ.increased blow-by Ⅱ.wear between the piston ring and groove
A.Ⅰonly is correct
B.Ⅱ only is correct
C.both Ⅰ and Ⅱ are correct
D.neither Ⅰ or Ⅱ are correct -
单项选择题
If the operating element of a thermostatic valve installed in a diesel engine cooling system malfunctions, it may result in （）
A.a low level in the engine expansion tank
B.excessively high coolant pressure
C.improper temperatures
D.malfunctioning of the jacket water heater
