[名词解释] differential inhibition(分化抑制)
[名词解释] contact inhibition (接触抑制)
[名词解释] 竞争性抑制作用(noncompetitive inhibition)
[名词解释] 竞争性抑制作用(competitive inhibition)
[名词解释] 反竞争性抑制作用(uncompetitive inhibition)
[单选题]A. feedback is an input ____A.which governs the state of a variableB.which provides a visual and audible alarmC.which indicates values of controlled variablesD.which measures the state of the controlled variable