单项选择题
A.screwed B.welded C.fastened D.rotated
The cylinder liners are made of （） and the cylinder sur...
单项选择题The cylinder liners are made of （） and the cylinder surfaces are sometimes chromium-plated.
A.steel B.copper C.cast iron D.stainless steel
The cylinder is fitted with internal liner so that a wa...
单项选择题The cylinder is fitted with internal liner so that a water space is left （） the liner and the outer wall.
A.around B.among C.in D.between
The cylinder head, cylinder liner and （） form the combu...
单项选择题The cylinder head, cylinder liner and （） form the combustion chamber.
A.frame B.piston C.crankcase D.explosion plate
