(来学网)扎带适宜的松紧度为能在夹板面上下移动()
  • A.
    (来学网)0.5cm
  • B.
    (来学网)1cm
  • C.
    (来学网)1.5cm
  • D.
    (来学网)2cm
  • E.
    (来学网)1—2cm