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【单选题】
位于()象限和下方的肿瘤发生术后乳房畸形的几率最高
【单选题】
肿瘤方向(左乳为例)在4-5点外下象限(Ⅲ区),手术方法及切口设计为
【单选题】
肿瘤方向(左乳为例)在9-11点内上象限(Ⅵ区),手术方法及切口设计为
【单选题】
People’s hearts ____ the children whose parents died in the accident.
【单选题】
A sudden idea ____ to him that he might try the new method.
【单选题】
We often get ____ when people cut in line.
【单选题】
“Can I help you?” “Well, I’m afraid the box is too heavy for you, ____ thank you all the same.”
【单选题】
A guest arrived ____ I was doing my housework.
【单选题】
—OK, $ 500, but that is my last offer. —____.?
【判断题】
空间曲线必穿过法平面和从切平面,但不穿过切平面.
【简答题】
求圆柱螺线x=acost,y=asint,z=bt的曲率和挠率