A.two position control
B.signal speed floating control
C.proportional control
D.reset control
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A.compressed air and nitrogen
B.helium and nitrogen
C.oxygen and hydrogen
D.oxygen and acetylene
A.moisture in the compressed air supply
B.excessive dryness in the compressed air supply
C.pressure surging in the compressed air receiver
D.insufficient lubrication of the system components
A.reset action
B.proportional action
C.two position action
D.rate action
A.command input
B.set point signal
C.output
D.feedback
A.set point
B.control point
C.deviation
D.offset
最新試題
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（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.