英译汉：lubrication

1、If the detergent type lubricating oil

If the detergent type lubricating oil being used in a diesel engine is black, the oil （）Amust be centrifugedBmust by filteredCmust be changedDis holding finely dispersed carbon in suspensio

2、Lubricating oil systems are fitted wit

Lubricating oil systems are fitted with a wide variety of strainers some of which can be cleaned in site while others have replaceable cartrid...

3、The removal of （） from lubricating oil

The removal of （） from lubricating oil will reduce engine wear and possible breakdowns.Acontaminating waterBcontaminated additivesCcontaminated fuelDcontaminating impuritie

4、The lubricating system for the cylinde

The lubricating system for the cylinder walls is different from the bearings in that the oil for former one is supplied in （） while that f...

5、（） fuel oils （） lubricating oils requi

（） fuel oils （） lubricating oils require treatment before passing to the engine.ABoth；andBNeither；norCEither；orDBoth；or

6、Water lubricated tailshaft bearings we

Water lubricated tailshaft bearings wear,（）Athe after one is more than forward oneBthe forward one is more than after oneCthe forward one is the same with after oneDit depends on the type of engine