29岁,女性,停经24周, * * 反复无痛性流血,经治疗无效,应选择()。
A.依沙吖啶引产
B.水囊引产
C.前列腺素引产
D.天花粉引产
E.剖宫取胎
参考答案:E
Karaoke, which was invented by the Japanese, ______ both wonders and problems.
A.has been produced
B.was produced
C.produced
D.has produced
检波器组合图形试验属于()。
A、井深试验
B、组合井试验
C、干扰波调查
D、接收因素试验