A.live
B.dead
C.excited
D.on line
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A.Feed back
B.Negative feed back
C.Close loop
D.Open loop
A.The shaft
B.The mechanical
C.The electric
D.The indicated
A.compressed air
B.hydraulic oil
C.electricity
D.All of the above
A.Alarm
B.Monitoring
C.Auto start-up
D.None of the above
A.make-up
B.desired value
C.deviation
D.set value
最新試題
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
The cetane rating of diesel fuel is an indication of the （）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
The main purpose of port State control is not to（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
The condensers located in various stages of a flash evaporator are cooled by（）