(来学网)基准剂量仪的零点漂移的允许精度为
  • A.
    (来学网)≤±0.1%
  • B.
    (来学网)≤±0.2%
  • C.
    (来学网)≤±0.5%
  • D.
    (来学网)≤±1%
  • E.
    (来学网)≤±2%