单项选择题
A.0,0.07MPa B.0,0.25MPa C.0.07MPa,0.25MPa D.0.25MPa,0.5MPa
A.输入量成反比 B.输出量成正比 C.扰动量成正比 D.放大倍数成正比
A.250% B.40% C.400% D.60%