单项选择题
A.should be gradually increased B.should be gradually reduced C.should be constantly kept D.should be varied up and down
The cooling water jacket is common to all the cylinders...
单项选择题The cooling water jacket is common to all the cylinders but there are often （） to ensure that each cylinder receives the right amount and flow of water.
A.dividing walls B.divided walls C.dividing liners D.divided jackets
The cooling water is in direct contact with the outer s...
单项选择题The cooling water is in direct contact with the outer surface of the liner as a result of which it is termed a （）.
A.water liner B.wet liner C.dry liner D.drown liner
The cooling of the piston is carried out by circulating...
单项选择题The cooling of the piston is carried out by circulating （） across the underside of the crown and inside the ring belt or through specially shaped passages.
A.sea water B.scavenging air C.lubricating oil D.fuel oil
