影响心脏功能的主要因素是() ["A．感染和贫血","B．心脏前负荷","C．心肌收缩力","D．心脏后负荷","E．心肌的顺应性"]
B超检查适应证为()输卵管通液术适应证为() ["A．子宫内节育器嵌顿","B．探寻异常子宫出血原因","C．了解输卵管通畅情况","D．月经中、后期了解有无排卵，探寻不孕症原因","E．子宫内膜异位症分期"]
治疗慢性心力衰竭时，哪种药物可能引发高钾血症() ["A．血管紧张素转换酶抑制剂","B．安体舒通","C．β受体阻滞剂","D．利尿剂","E．洋地黄"]
下列哪一种情况下心脏的排血量增加() ["A．动脉瓣狭窄","B．维生素B1缺乏","C．动静脉瘘","D．房间隔缺损","E．粘液性水肿"]
胎儿镜下胎血取样时间宜在() 如图，经腹壁羊膜穿刺羊水染色体检查宜在() ["A．妊娠34周后","B．妊娠16～22周","C．妊娠18～22周","D．妊娠6～8周","E．妊娠28周后"]
妊娠32周B超胎盘下缘紧靠子宫颈内口边缘，胎头与膀胱间距离增宽()妊娠28周B超示胎盘与子宫肌层间出现一轮廓不清，边缘不整，无回声区，胎盘增厚并向羊膜腔突出()B超胎盘表面突出圆形肿块，包膜完整，内为多房呈网状或蜂窝状的无回声区或低回声区()
