海船船员考试
单选题Low compression pressure in a diesel engine is caused by（）A low water in the expansion tankB improperly seated valvesC low fuel oil pressureD worn or broken cylinder liner sealing rings
题目
low water in the expansion tank
improperly seated valves
low fuel oil pressure
worn or broken cylinder liner sealing rings
相似问题和答案
第1题：
Low compression in a diesel engine could be caused by
A.worn or broken cylinder liner sealing rings
B.high cooling water temperature
C.worn or broken piston rings
D.low fuel oil pressure
第2题：
high compression pressure
low intake air temperature
low exhaust pressure
high scavenge air pressure
第3题：
Which of the following reasons represents why the designed compression ratio of a gasoline engine is lower than that of a diesel engine?
A.compression must be low for effective spark ignition
B.compression must be low for required horsepower and torque generation
C.compression must be low to prevent pre-ignition
D.compression must be low to have effective pre-ignition
第4题：
a leaking fuel injector nozzle
a clogged air filter
excessively early fuel injection
malfunctioning valves
第5题：
clogged air filter
compression stroke
burned exhaust valves
all of the above
第6题：
clogged coolant passages
a leaking cylinder head gasket
low fuel oil pressure
worn or broken cylinder liner sealing rings
第7题：
vacuum pressure
specific gravity
heat
viscosity
第8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
解析：sulfur/sulphur：硫;content：内容，含量
译文：运行中的柴油机冒黑烟，可能的原因是燃油喷射滞后。
第9题：
high combustion temperature
high compression pressure
cracked cylinder liner
fuel with a high vanadium content
第10题：
prevent engine back pressure at heavy loads
increase total engine efficiency at low loads
prevent boiler corrosion at low engine loads
improve engine fuel consumption at any load