A.anaerobic bacteria
B.aerobic bacteria
C.air bubbles
D.disinfection chemicals
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A.deoxygenating
B.oxygenating
C.chemicalizing
D.disinfecting
A.deoxygenating
B.extended aeration
C.oxygenating
D.bubbling air
A.waste oil
B.waste cloths
C.Oil rags
D.Waste food
A.should be stopped manually
B.keeps the combustion as usual
C.would be cut off by an interlock
D.would replace the waste oil burner and keep going on
A.the solid waste dump chute
B.an access door
C.the same way for waste oil burners
D.a changing opening
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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
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
If separating effect is not good, which measure should be taken （）
The cetane rating of diesel fuel is an indication of the （）
Which of the following items don’t belong to dock repair works?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
（） is not installed on the main switchboar.