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單項選擇題

From the passage, we can learn that the simplest controller action is（）

A.two-step controller action
B.proportional, controller action
C.integral controller action
D.derivative controller action

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單項選擇題

Which kind of the following controllers is the most sophisticated controller?（）

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

單項選擇題

The word “offset” most probably means（）

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