Cast iron pistons used in large propulsion diesel engines are constructed with （）
1、A thrust bearing is used with a propul
A thrust bearing is used with a propulsion diesel engine to （）.Acontrol axial movement of the crankshaftBtransmit engine thrust to the propell...
2、（） is sometimes used for piston coolin
（） is sometimes used for piston cooling since leaks into the crankcase would not cause problems.ADiesel oilBHydraulic oilCLube oilDMineral oil
3、Piston compression rings used in a die
Piston compression rings used in a diesel engine function to （）Atransfer heat from the cylinder to the pistonBscrape oil from the sides of the pistonCseal the combustion space from the crankcasesDprevent any piston contact with the cylinder liner
4、Many cast iron pistons are designed wi
Many cast iron pistons are designed with heat dams, which serve to （）Akeep piston crown temperatures elevated for smoother combustionBreduce th...
5、A cast steel strong back is fitted in
A cast steel strong back is fitted in way of the combustion space to help absorb （）.Aflame temperatureBfuel oilCair movementDgas force
6、The cast iron guide-ways for （） are at
The cast iron guide-ways for （） are attached to the top section and seal off the crankcase.Athe connecting rodBthe cross-headCthe piston rodDthe air box