皮皮学，免费搜题
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搜题
【单选题】
子宫收缩功能紊乱时首选A.
盐酸哌替啶
B.
吗啡
C.
缩静脉滴注
D.
苯巴比妥钠
E.
地西泮
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】删除的快捷命令是: ___;___。
【单选题】It is a revolutionary research tool with dramatic medical implications, thorny bioethical conundrums, an awkward patent spat and oating over it all, billion-dollar commercial implications for medicin...
A.
having many thorns or thorn bushes
B.
causing distress, di culty, or trouble
C.
continuously uneasy, especially in fear of being detected
D.
a source of continual annoyance