A.oxygenating
B.oxidizing
C.deoxygenating
D.proportioning
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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
A.more economic
B.larger capacity on oil treatment
C.less costive
D.more capable of separating emulsified oil
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Using a file without a handle may result in （）
Which of the following items don’t belong to dock repair works?（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
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（） is not installed on the main switchboar.
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（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）