A.the bacteria
B.oxygen
C.oxidizing function
D.agitation function
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A.oxygenating
B.oxidizing
C.deoxygenating
D.proportioning
A.any requirement appointed by the Officer
B.the most suitable requirement
C.the most stringent requirement
D.no requirement
A.plastics
B.comminuted or ground papers, rags, glass, metal etc
C.food waste comminuted or ground
D.Incinerator ash
A.gravity separation
B.use of adsorbents
C.use of flocculents
D.use of chemical addition
A.Raising temperature
B.less use of surfactant
C.more use of solvent
D.polishing device fouling prevention
最新試題
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
（） is not installed on the main switchboar.
Which of the following items don’t belong to dock repair works?（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
If separating effect is not good, which measure should be taken （）
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
To proceed to the assistance of a ship in distress is（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）