A.main engines
B.main boilers
C.pipes and fittings
D.A and B
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A.steam trap
B.check valve
C.separator
D.strainer
A.a check valve
B.a gate valve
C.a pressure reducing valve
D.a quick closing valve
A.at most references
B.at least references
C.maximum standards
D.minimum standards
A.pollution by oil
B.pollution by noxious liquid substances carried in bulk
C.pollution by sewage from ships
D.pollution by garbage from ships
A.pollution
B.economization
C.safety
D.efficiency
最新試題
The cetane rating of diesel fuel is an indication of the （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
To proceed to the assistance of a ship in distress is（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
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.
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The condensers located in various stages of a flash evaporator are cooled by（）