Opening of the cylinder （） will admit compressed air into the cylinder.

[单选题]The opening or closing of the cylinder starting valve is controlled by （）.A . the starting air distributorB . the cut-off valve on the air mainC . the main starting valveD . the air bottle control valve

In each cylinder cover is a large central opening for mounting _____.A. the indi

[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

The spaces in the cylinder head and the space between the cylinder jacket 1 and

[单选题]The cylinder cover is not provided with ( )A．fuel valveB．the starting valveC．lubricator

[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 cover is not provided with （）.A . fuel valveB . lubricatorC . indicator valveD . the starting valve