单选题A diesel engine exposed to widely varying ambient temperatures should use to a lubricating oil with （）Aa high viscosity indexBa low viscosity indexCneutralize acidsDresist oxidation at high temperatures
单选题
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
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