单项选择题
A.contaminated B.emulsified C.deteriorated D.oxidated
（）on board ship are used to control and distribute the ...
单项选择题（）on board ship are used to control and distribute the electrical energy generated by generators.
The heavy-duty lubricating oil with chemical has been w...
单项选择题The heavy-duty lubricating oil with chemical has been widely introduced in recent years（）
A.additives B.behavior C.coolant D.desiccant
Great care is dedicated to the removal of from the scav...
单项选择题Great care is dedicated to the removal of from the scavenge air（）
A.gravity B.viscosity C.density D.humidity
