单项选择题
A.exhaust valves B.mechanical lubricators C.cooling water pumps D.fuel injection pumps
Factor influencing the position of the interface betwee...
单项选择题Factor influencing the position of the interface between the liquid seal and the oil in a purifier is （）.
A.throughput B.back pressure C.gravity disc D.None of the above is wrong
Expansion tank should be used to remove （） from cooling...
单项选择题Expansion tank should be used to remove （） from cooling water.
A.scale B.sludge C.chemicals D.air
Exhaust temperature increases in all cylinders, the pos...
Exhaust temperature increases in all cylinders, the possible cause may be（） (1) increased scavenging air temperature (2) air in fuel pumps and fuel valves (3) fouling of air and gas passages
A.(1)+(2) B.(1)+(3) C.(2)+(3) D.(1)+(2)+(3)
