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"]
下列哪种情况不宜应用强效血管扩张剂() ["A．二尖瓣狭窄","B．高血压心脏病并急性左心衰","C．左室流出道梗阻","D．缺血性心脏病","E．主动脉瓣狭窄"]
在治疗急性左心衰竭时，下列哪种药物可以使用() ["A．速尿","B．吗啡","C．安定","D．氨茶碱","E．普萘洛尔(心得安)"]
LEEP刀环形切除术时，(1)边界如何控制?(2)深度如何控制?
洋地黄治疗心功能不全时，在下列哪种或哪几种情况下宜采用小剂量() ["A．急性心肌炎","B．肺源性心脏病(简称肺心病)","C．严重终末期心力衰竭","D．急性心肌梗死","E．肾功能减退"]
羊水染色体检查()胎儿皮肤组织活检()经皮脐静脉穿刺()绒毛活检()
