(来学网)单层螺旋CT扫描,机架旋转速度360°/s准直器宽度20mm,床速10mm/s时,螺距(P)为
  • A.
    (来学网)0.01
  • B.
    (来学网)0.1
  • C.
    (来学网)0.5
  • D.
    (来学网)1
  • E.
    (来学网)2