The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its ().
- Aspecific gravity
- Bviscosity
- CS E number
- Dhydrolytic stability
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its ().
1、Air trapped in the hydraulic fluid of
Air trapped in the hydraulic fluid of a steering system may be indicated by()Athe steering pumps overspeedingBa jammed open relief valeCa constantly occurring improper rudder responseDexcessive ram pressure
2、Air trapped in the hydraulic fluid of
Air trapped in the hydraulic fluid of a steering system would be indicated by()Aan improper rudder responseBhammering noises in the equipment or transmission linesCpopping or sputtering noisesDall the above
3、The amount of fluid delivered by a scr
The amount of fluid delivered by a screw pump can be regulated by ().Athrottling the pressure lineBchanging the speed of the rotorCeither A or BDNone of the above is tree
4、The amount of fluid delivered by a gea
The amount of fluid delivered by a gear pump can be regulated by ().Athrottling the pressure lineBchanging the speed of the rotorCeither A or BDNone of the above is true
5、The amount of lubricating oil in the d
The amount of lubricating oil in the drain tank should be checked by ().AmeasuringBsounding rodCmeteringDweighting
6、Air trapped in the hydraulic fluid of
Air trapped in the hydraulic fluid of a steering system should be indicated by ().Athe pump over-speedingBan improper rudder responseCbubbles in the sight glassDram relief valves lifting