A.installations
B.basket strainers
C.a cylindrical container
D.a metal or wire basket
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A.dampers
B.filters
C.stopper circuits
D.separators
A.check valve
B.non-return valve
C.steam trap
D.quick closing trap
A.stop valves
B.non-return valves
C.quick closing valves
D.relief valves
A.a pressure reducing valve
B.a pilot valve
C.an operating piston
D.downstream pressure
A.adjusting a nut
B.a pre-tensioned spring
C.any spring
D.upstream pressure
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When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
Cold weather starting of a diesel engine may be made easier by（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
The treatment of the fuel oils involves storage, heating, filtering and（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
The shipboard oil pollution emergency plan will be invalid after （）
（） is not installed on the main switchboar.
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
The main purpose of port State control is not to（）