(来学网)绒毛膜癌脑转移患者进行腰椎穿刺留取脑脊液标本时,一般1次不超过
  • A.
    (来学网)1ml
  • B.
    (来学网)3ml
  • C.
    (来学网)5ml
  • D.
    (来学网)7ml
  • E.
    (来学网)9ml