A . cylinder cover
B . cylinder block
C . cylinder frame
D . bed-plate
[单选题]The cylinder liners are made of _____ and the cylinder surfaces are sometimes chromium-plated.A.steelB.copperC.cast ironD.stainless steel
[单选题]The withdrawing of the cylinder liners, in general, depends on their ().This may amount to approximately 1/120 of the diameter in some engines.A . correct maneuveringB . wearC . working efficiencyD . maintenance
[单选题]The cylinder liners are made of () and the cylinder surfaces are sometimes chromium-plated.A . steelB . copperC . cast ironD . stainless steel
[单选题]The cylinder covers and the liners are bolted together by means of ().A . bolts welded into the cylinder headB . bolts welded into the cylinder framesC . studs screwed into the cylinder headD . studs screwed into the cylinder frame
[单选题]The () chamber is enclosed between the cylinder head and piston.A . lubricationB . injectionC . coolingD . combustio
[单选题]The ports are drilled in the liners at an angle of approx 20℃ the result being that () is given a rotary movement.A . the scavenging airB . the exhaust gasesC . the mixed airD . the spray oil
[单选题]The cylinder head, cylinder liner and () form the combustion chamber.A . frameB . pistonC . crankcaseD . explosion plate
[单选题]() is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.A . The fuel oilB . The lube oilC . The sea waterD . The fresh water
[单选题]Cracks in cylinder and cylinder covers may () from unequal heating.A . makeB . causeC . resultD . produce
[单选题]In C language,a ( )is a series of characters enclosed in double quotes。A.ma