单选题（）can not cause oil flow from water outlet of self-cleaning separator.AOil temperature too highBDiameter of gravity disc too largeCOil temperature too lowDHigh level tank out of water
单选题
（）can not cause oil flow from water outlet of self-cleaning separator.
A
Oil temperature too high
B
Diameter of gravity disc too large
C
Oil temperature too low
D
High level tank out of water
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