单项选择题
A.Low viscosity index
B.Low carbon forming tendencies
C.High film strength
D.High non-corrosive qualities
单项选择题 A diesel engine exposed to widely varying ambient temperatures should use to a lubricating oil with （）
单项选择题 The Total Base Number (TBN) value of diesel engine lube oil refers to its ability to （）
单项选择题 One characteristic of a lubricating oil adversely affecting the result of centrifuging is （）