A.a closed loop control system
B.an open loop control system
C.a boiler control system
D.a steering gear
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A.sliding bowl bottom
B.gravity disc
C.bowl
D.liquid level detector
A.sliding bowl bottom
B.gravity disc
C.separating disc
D.scum valve
A.turbine
B.screw
C.vaneejector
D.centrifugal
A.leaky pipe
B.opened inlet valve
C.too much water in tank
D.None of the above
A.Steam trap
B.Check valve
C.Separator
D.Strainer
最新試題
The ISPS Code consists of a mandatory section-Part A, which shows（）
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（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
（） is not installed on the main switchboar.
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
Diesel engine air start system check valves are opened by （）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）