A.单端输入 B.双端输入 C.单端输出 D.双端输出
A.-0.1,200 B.-0.1,2000 C.-0.1,-200 D.1,2000
A. B. C. D.
A.100,0.009 B.1000,0.01 C.100,0.01 D.1000,0.099