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
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相关考题
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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
