Directional intake ports in diesel engines are used to （）.

[单选题]The intake valves in a diesel engine are reseated by （）.A . cam followersB . push rodsC . combustion gasesD . valve spring

[单选题]If you are unable to stop a diesel engine by any other means，you should（）.A . discharge a CO2 extinguisher in the air inletB . pull off the distributor capC . secure the jacket waterD . secure the starting air supply valve

[单选题]Lubricating oil systems for diesel engine journal bearings are usually lubricated by which of the following types of lubricating oil systems?（）A . SplashB . GravityC . PressureD . Bypa

[单选题]A restricted air intake to a diesel engine may result in the engine （）.A . failing to reach rated speedB . knocking under maximum loadC . hunting or surging under light loadD . overspeeding and running away

[单选题]For an ordinary four-stroke diesel engine the exhaust valves close （）.A . after TDCB . before TDCC . after BDCD . before BDC

[单选题]The ports are drilled in the liners at an angle of approx 20℃ the result being that （） is given a rotary movement.A . the scavenging airB . the exhaust gasesC . the mixed airD . the spray oil

[单选题]The scavenging air ports are located at （） that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.A . so a heightB . such a heightC . so highD . such high

[单选题]What is the purpose of the intake/exhaust valves in a diesel engine? （）A . They regulate the combustion cycleB . They supply cooling waterC . They synchronize the ignition sparkD . They supply and regulate the lubricant flow

[试题]H．ave you ever served the auxiliary engine to combustion heavy oil? What should be borne in mind when transferring oil; from heavy oil to light oil?

[试题]H．ow to pump out bilge water in the engine room?