A.manual position
B.bus neutral position
C.raise voltage position
D.transfer position
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A.prevent the windings from becoming brittle
B.prevent moisture from condensing in the windings during shutdown
C.prevent acidic pitting of the slip rings
D.keep the lube oil warm for quick starting
A.generate its own electrical power
B.transform electrical energy into mechanical energy
C.increase or decrease circuit voltage as required
D.convert AC current to DC current
A.Glass
B.Bakelite
C.Soft iron
D.Aluminum
A.current flow in a circuit
B.voltage between two points in a circuit
C.circuit continuity
D.power
A.droop
B.drop
C.dip
D.regulation
最新試題
Cold weather starting of a diesel engine may be made easier by（）
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
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
The ISPS Code consists of a mandatory section-Part A, which shows（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
（） is not installed on the main switchboar.
If separating effect is not good, which measure should be taken （）
The treatment of the fuel oils involves storage, heating, filtering and（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）