图示结构,当支座B发生沉降△时,支座B处梁截面的转角大小为:
(来学网)
  • A.
    (来学网)(6/5)(△/l)
  • B.
    (来学网)(6/7)(△/l)
  • C.
    (来学网)(3/5)(△/l)
  • D.
    (来学网)(3/7)(△/l)