单选题（）can cause oil flow from water outlet of a separator.AOil inlet valve opening too quicklyBOil temperature too highCDiameter of gravity disc too smallDViscosity of oil too low
单选题
（）can cause oil flow from water outlet of a separator.
A
Oil inlet valve opening too quickly
B
Oil temperature too high
C
Diameter of gravity disc too small
D
Viscosity of oil too low
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