某患者,人工流产术后,不规则流血15天,药物治疗无效,子宫稍大,软,宫口开大,应考虑
A.子宫内膜炎
B.吸宫不全
C.功血
D.宫颈粘连
E.子宫复旧不全
参考答案:B
He was lucky in the accident, but his car was completely _________.
A.ruin
B.hurt
C.damaged
D.destroyed
机床改造时,反馈外的传动零件直接影响机床精度和加工精度。