单项选择题
A.the highest B.above 3/4 C.1/2 -3/4 D.the lowest
() is not installed on the main switchboar.A.Ammeter an...
单项选择题() is not installed on the main switchboar.
A.Ammeter and changeover switch B.Power factor meter C.Synchroscope D.Reverse sequence relay
One of the reasons that cause oil flowed from sludge ou...
单项选择题One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()
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
When does auxiliary burner of incinerator put into oper...
When does auxiliary burner of incinerator put into operation? () Ⅰ. start incinerator when it is cold Ⅱ. the sludge for dealing with is little Ⅲ. the sludge for dealing with is large Ⅳ. the water and impurity in sludge are too much Ⅴ. the temperature in incinerator is low Ⅵ. dealing with little solid rubbish
A.Ⅰ+Ⅱ+Ⅲ+Ⅴ B.Ⅰ+Ⅱ+Ⅲ+Ⅳ C.Ⅰ+Ⅳ+Ⅴ+Ⅵ D.Ⅰ+Ⅱ+Ⅲ+Ⅵ