A.centrifugingB.pressurizingC.atomizationD.ignitingThe ……

单项选择题Which of the following items don’t belong to dock repair works?（）

A.making the repair list, booking spare parts and special tools for the dock repair
B.shutting off all of the S.W valves to outboard
C.the sketches or diagrams used for the dock repair
D.cleaning up the oil tank and boiler before enter the dock

单项选择题During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.

A.the highest
B.above 3/4
C.1/2 -3/4
D.the lowest

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

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

单项选择题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