單項(xiàng)選擇題Which kind of the following controllers is the most sophisticated controller?()

A.Proportional controller
B.Integral controller
C.Derivative controller
D.PID controller


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1.單項(xiàng)選擇題The word “offset” most probably means()

A.predetermined value
B.measured value
C.off-limit
D.sustained deviation

2.單項(xiàng)選擇題TWO STEP CONTROLER ACTION is mainly()

A.proportional control
B.integral control
C.derivative control
D.on-off control

3.單項(xiàng)選擇題In the event of failure of an auxiliary such as a lubricating pump, the standby pump is started and put on the line automatically“the line” in this sentence refers to()

A.fuel manifold
B.lubricating pipe line
C.auxiliary engine pipe line
D.generator output line

4.單項(xiàng)選擇題Which of the following is NOT the advantages of the remote control and automation of engine operations?()

A.Routine supervisory labor particularly the unproductive night-service labor is reduced
B.Engine mal-operation is automatically sensed and manned
C.The engine room need be manned at night in bad weather or close waters
D.Some remedial measures can be taken automatically

5.單項(xiàng)選擇題The load rating of an AC generator is determined by the()

A.internal heat it can withstand
B.load it can carry continuously
C.load it is capable of supplying
D.overload it can carry for a specified time only