A．worn piston rings
B．installation of undersized sealing rings
C．operating the engine at low loads
D．restricted cooling water passages
[单选题]The cylinder head, cylinder liner and （） form the combustion chamber.A . frameB . pistonC . crankcaseD . explosion plate
[单选题]The space between cylinder liner and jacket is called _____.A．the cooling waterB．the circulating waterC．the coolerD．the cooling water space
[单选题]E．ach cylinder liner on the marine medium speed engines _____.A．is usually cooled by sea waterB．can be replaced when worn outC．is in direct contact with the water in the bore of the cylinderD．can t expand when heated
[单选题]The space between cylinder liner and jacket is called （）.A . the cooling waterB . the circulating waterC . the coolerD . the cooling water space
[单选题]Cylinder liner cooling is often referred to as （）.A . piston coolingB . sleeve coolingC . central coolingD . jacket cooling
[单选题]Each cylinder liner on the marine medium speed engines （）.A . is usually cooled by sea waterB . can be replaced when worn outC . is in direct contact with the water in the bore of the cylinderD . can t expand when heated
[单选题]（） into the cylinder because no fuel can burn （） it.A . Air must be admitted；withoutB . Oil must be injected；withoutC . Air must be admitted；withD . Oil must be injected；with
[单选题]Insufficient ______ can cause a processor to work at 50% or even more below its performance potential.A．mouseB．I/OC．documentD．MemoryA．B．C．D．
[单选题] Insufficient （71）can cause a processor to work at 50% or even more below itsperformance potential.（71）A． mouseB． I/OC． documentD． memory
[单选题]Insufficient(71)can cause a processor to work at 50% or even more below its performance potential.A．mouseB．I/OC．documentD．memory