valve guides
oil control rings
valve seats
compression rings
第1题：
Generally speaking, the fuel injected into a marine diesel engine combustion chamber is ignited by ______.
A.spark plugs
B.glow plugs
C.heat of compression
D.a magneto
第2题：
compression pressure
lube oil header pressure
scavenge air pressure
piston ring blow-by
第3题：
Diesel engine blow-by is the leakage of combustion gases past the( ).
A.oil rings only
B.compression and scraper rings
C.cylinder liner sealing
D.cylinder liner ring grooves
第4题：
chromium plating piston rings
knurling the piston skirt
extended maximum power operation
applying load to a cold diesel engine
第5题：
spark plugs
glow plugs
heat of compression
a magneto
第6题：
compressed air
electricity
hydraulic oil
compressing air
第7题：
decreased compression pressure
increased lube oil pressure
lower lube oil temperature
excessive leakage past the piston rings
第8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9题：
increase
decrease
remain the same
increase on compression decrease on expansion
第10题：
crankcase pressure
compression pressure
scavenge pressure
exhaust manifold pressure