A.the flag state
B.the coastal state
C.the port state
D.the shipping company
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A.the chief engineer
B.the engineer on cabin watch
C.the bridge officer on watch
D.the master
A.the chief engineer
B.the engineer on cabin watch
C.the bridge officer on watch
D.the master
A.at anchor
B.at unsheltered anchorage
C.in congested waters
D.in an open road-stead
A.The chief engineer
B.The second engineer
C.The third engineer
D.The fourth engineer
A.The chief engineer
B.The second engineer
C.The third engineer
D.The fourth engineer
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（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
The condensers located in various stages of a flash evaporator are cooled by（）
If separating effect is not good, which measure should be taken （）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
（） is not installed on the main switchboar.
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For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）