A . is scavenged
B . is atomized with fuel oil
C . be scavenged
D . be atomized with fuel oil
[单选题]It is very important that each cylinder should be () scavenged before the charged air is compressed.A . wellB . goodC . excellentD . respectively
[单选题]E.ach cylinder is closed at the top by a _____, made of a special heat-resistant steel.A.cylinder linerB.coupling flangeC.cylinder coverD.piston crown
[单选题]The bore of each cylinder is formed in a liner which can be () when worn out.A . weldedB . replacedC . drilled againD . bored
[单选题]Each cylinder is closed at the top by a (), made of a special heat-resistant steel.A . cylinder linerB . coupling flangeC . cylinder coverD . piston crow
[单选题]In each cylinder cover there are two or three holes for ()A . the exhaust valvesB . the fuel valvesC . indicator cocksD . the fuel pum
[单选题]It is very necessary ______ a foreign language.A.learningB.to learningC.to
[单选题]E.ach cylinder liner on the marine medium speed engines _____.A.is usually cooled by sea waterB.can be replaced when worn outC.is in direct contact with the water in the bore of the cylinderD.can t expand when heated
[单选题]In each cylinder cover is a large central opening for mounting ()A . the indicating cockB . the starting valveC . air inlet valveD . the exhaust valve
[单选题]Each cylinder liner on the marine medium speed engines ().A . is usually cooled by sea waterB . can be replaced when worn outC . is in direct contact with the water in the bore of the cylinderD . can t expand when heated
[单选题]Each cylinder has one starting valve which is usually opened by air pressure and closed by ()A . nuts and boltsB . new jointsC . spring forceD . sealing ring