图示单元体中应力单位为MPa,则其三个主应力为:
(来学网)
  • A.
    (来学网)120,40,-30
  • B.
    (来学网)120,30,-30
  • C.
    (来学网)130,30,-30
  • D.
    (来学网)80,50,-50
正确答案:
C