A.Ammeter and changeover switch
B.Speed governor device
C.Synchroscope
D.Wattmeter
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A.Control panel
B.Paralleling panel
C.Load panel
D.Busbar
A.Overflow valve
B.Reducing valve
C.Balancing valve
D.Reducing valve or balancing valve
A.overflow valve
B.reducing valve
C.relief valve
D.sequence valve
A.overflow valve
B.reducing valve
C.relief valve
D.sequence valve
A.control the fluid flow through it
B.prevent the pressure before it over the specified valve
C.make the pressure after it steady
D.control the direction of oil flow
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A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
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The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
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As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.