海船船员考试
单选题Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）A starting the engine while hotB knurling the piston skirtC operating the engine overheatedD scuff resistant piston rings
题目
starting the engine while hot
knurling the piston skirt
operating the engine overheated
scuff resistant piston rings
相似问题和答案
第1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
解析：scraper：刮刀;groove：槽
译文：柴油机漏气指的是燃气通过压缩环(气环)和刮油环泄漏。
第2题：
clogged coolant passages
a leaking cylinder head gasket
low fuel oil pressure
worn or broken cylinder liner sealing rings
第3题：
An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with________.
A.graphite packing
B.sealing compound
C.lubricating oil
D.gaskets
第4题：
inefficiency
oiliness
detergency
purity
第5题：
less even torque
higher cylinder head temperatures
fewer power strokes per revolution
greater weight/size requirements
第6题：
Diesel engines are started by supplying into the cylinders in the appropriate sequence for the required direction.
A.cooling water
B.compressing air
C.compressed air
D.cylinder oil
第7题：
clogged fuel injection pumps
increased cylinder liner wear
intake valve stem corrosion
varnish deposit on pistons
第8题：
Each cylinder liner on the marine medium speed engines _____.
A.is usually cooled by sea water
B.can be replaced when worn out
C.is in direct contact with the water in the bore of the cylinder
D.can t expand when heated
第9题：
the column
the jacket
cylinder cover
cylinder liner
第10题：
low compression pressure
increased piston wear
increased cylinder lube oil consumption
poor contact between compression rings and liner