士的宁的致死量为()
A.30mg
B.5~10mg
C.2~4mg
D.0.5mg
E.0.2mg
参考答案:A
解析:士的宁的致死量为30mg。故答案是A。
The most important thing for Lucy is to find a proper job, ______ in which she can bring her ability and
potential into full play. [ ]
A. this
B. that
C. one
D. the one
患者,男,52岁,左下肢发凉,间歇性跛行l年,冠心病史3年,心电图检查示:冠状动脉供血不足。应首先考虑的是()
A.下肢深静脉血栓形成
B.动脉硬化性闭塞症
C.单纯性下肢静脉曲张
D.血栓闭塞性脉管炎
E.干性坏疽