reduce the engine load
increase the cooling water flow
increase the lube oil pressure
adjust the fuel rack
第1题：
A smoking exhaust from an operating diesel engine could be caused by( ).
A.low sulfur content in the fuel
B.a loose injector inlet connection
C.late fuel injection
D.high injection pressure
第2题：
corrosion and grooving of exhaust valves
corrosion and gumming of the fuel injection pump
salt deposits in the exhaust manifold
slag deposits in the fuel injection equipment
第3题：
An indication of an overloaded main propulsion diesel engine is( ).
A.white smoke in the exhaust
B.high exhaust gas pyrometer readings
C.sparks in the exhaust
D.blue smoke in the exhaust
第4题：
provide added wear protection against today’s corrosive quality of fuel
increase overall valve strength due to the high gas pressures
assist in dissipating heat due to the extreme operating temperatures
reduce the overall weight of the valve thus helping eliminate valve spring surge and hammering
第5题：
a low level in the engine expansion tank
excessively high coolant pressure
improper temperatures
malfunctioning of the jacket water heater
第6题：
A bypass line provided around a waste heat auxiliary boiler in a diesel engine exhaust system, may be used to avoid boiler ______.
A.corrosion at low engine loads
B.erosion at high engine loads
C.overload at high engine loads
D.scaling at all exhaust temperatures
第7题：
to be kept
logged
changed
has remained
第8题：
High firing pressures and low exhaust temperature in a diesel engine may resultfrom( ).
A.decreased piston to cylinder head clearance
B.increased exhaust system back pressure
C.early fuel injection timing
D.low scavenge air temperature
第9题：
feel the high pressure fuel line
check the cylinder exhausts for white smoke frequently
check the cylinder exhaust temperature
isolate each cylinder and inspect the injector
第10题：
the exhaust will be clear
fuel consumption will be low
all the fuel will be burned at top dead center
fuel consumption will be high