正确答案: A
a high viscosity index
题目:A diesel engine exposed to widely varying ambient temperatures should use to a lubricating oil with .
解析:A
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举一反三的答案和解析:
[单选题]Which factor determines the ring dam size for a fuel oil, tubular bowl type, centrifugal purifier?
The specific gravity of the fuel.
[单选题]下列哪种观点正确?________。
能使一船采取适当而有效的避碰行动的航速,即可称之安全航速
[单选题]For a purifier changing to a gravity disc with smaller hole diameter will move the interface towards the _______.
bowl center
[单选题]上涨
rise
[单选题]沿海海域发生溢油,在进行海上溢油处理时,使用( )前必须得到港口当局同意。
油分散剂
[单选题]急性胰腺炎病人可以用( )。
度冷丁
[单选题]按职务分工,船舶冰机的维护管理工作应由_负责。
大管轮