单项选择题

The ratio of output response to a specified change in the input is known as（）

A.primary feedback
B.deviation
C.sensitivity
D.dead band

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单项选择题

The control mode where the position of the final control element has a linear relationship with the position or value of the controller, variable is known as（）

A.two position control
B.proportion control
C.reset control
D.rate control

单项选择题

Which of the following definitions can be used to define the term ‘offset ’ as a characteristic of controller action?（）

A.The period of time in which the set point and the control point coincide
B.The periodic change between the set point and the control point
C.The variable difference between the set point and the control point
D.The constant difference between the set point and the control point

单项选择题

‘Offset’ is an inherent characteristic of which of the follow types of control modes?（）

A.Tow position
B.Proportional
C.Reset
D.Rate