(来学网)从四肢静脉注入对比剂后,肝静脉期显示时间约为
  • A.
    (来学网)30s
  • B.
    (来学网)35s
  • C.
    (来学网)45s
  • D.
    (来学网)55s
  • E.
    (来学网)60s