(来学网)单层螺旋CT,当扫描机架旋转1周,检查床运行的距离为2cm,扫描层厚为1cm,螺距是
  • A.
    (来学网)1/2
  • B.
    (来学网)1/2cm
  • C.
    (来学网)2
  • D.
    (来学网)2cm
  • E.
    (来学网)1