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单选题
（）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
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单选题（）can cause oil flow from sludge outlet of self cleaning separator.A
Too much sludge accumulated in separator bowlB
Diameter of gravity disc too largeC
High level tank lack of waterD
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单选题One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）A
seal water supply be cut offB
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the flow rate of oily water is too much
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单选题One of the reasons that causes oil flowed from sludge outlet of a self-cleaning purifier is （）A
seal water supply be cut offB
make-up water supply be cut offC
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the flow rate of oil is too much
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The temperature of sludge tank is 80~100℃C
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The ash can be dumped into sea when the distance is more than 3 miles from land
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