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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The sludge tank installed in the diesel engine room is used to collect（） Ⅰ.sludge from the fuel oil settling tanks ad centrifuge Ⅱ.water that has been collected in the settling tankA
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单选题Which one of the following is not generally recognized as one constitute of bilge water?（）A
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单选题（）can not cause oil flow from water outlet of self-cleaning separator.A
Oil temperature too highB
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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
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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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单选题Concerning the incinerator’s operation, which of the following is not correct?（）A
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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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refrigerant bubbles in the lube oilB
refrigerant reducing the lube oil viscosityC
oxidation of the lube oil from overheatingD
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the piston cooling oil return pipesB
the main and crankpin bearingsC
thrust and intermediate bearingsD
stern tube and thrust bearings
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单选题In cleaning up an oil spill, the use of chemical agents would （）.A
absorb the oil for easy removalB
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disperse or dissolve the oil in the waterD
not affect the oil
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