运算放大器组成的电压表电路如图所示,已知输出端所接电压表满量程为5V,且R(来学网)=1MΩ。若要得到0.5V、5V、50V三种量程,则R、R、R的阻值分别为:
  • A.
    (来学网)0.1MΩ,1MΩ,10MΩ
  • B.
    (来学网)0.5MΩ,5MΩ,50MΩ
  • C.
    (来学网)10MΩ,1MΩ,0.1MΩ
  • D.
    (来学网)50MΩ,5MΩ,0.5MΩ