- 搜标题
- 搜题干
- 搜选项
单项选择题
A diesel engine exposed to widely varying ambient temperatures should use to a lubricating oil with .
A diesel engine exposed to widely varying ambient temperatures should use to a lubricating oil with .
A.a high viscosity index
B.a low viscosity index
C.neutralize acids
D.resist oxidation at high temperatures
A.
A.a
B.a
C.neutralize
D.resist
A.a
B.a
C.neutralize
D.resist
