A.acid
B.sludge
C.mechanical impurity
D.salinity
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A.too little seal water
B.improper gravity disc
C.oil discharging pump not working very well
D.low water level of the working water
A.100%
B.80%
C.1/2
D.1/3
A.100%
B.1/2
C.1/5
D.1/3
A.seal water supply be cut off
B.make up water supply be cut off
C.oil outlet valve closed or not open sufficiently
D.the flow rate of oily water is too much
A.both as clarifiers
B.first one as clarifiers, second one as purifier
C.both as purifiers
D.first one as purifier, second one as clarifier
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When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
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