单项选择题
Check value is used to control （）
A.direction of oil flow
B.back pressure of return oil
C.bypass of filter
D.high pressure overflow
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相关考题
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单项选择题
（）can cause oil flow from sludge outlet of self cleaning separator.
A.Too much sludge accumulated in separator bowl
B.Diameter of gravity disc too large
C.High level tank lack of water
D.Oil input too rapidly -
单项选择题
（）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 -
单项选择题
（）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
