剖视图与剖面图的区别是什么?
不属于支气管扩张外科手术治疗禁忌证的是() ["一般情况差,肝肾功能不全","双侧广泛支气管扩张,心肺功能不全","支气管扩张病变范围超过一个肺叶","合并严重肺气肿、哮喘","合并急性肺部感染,尚未有效控制"]
简述80W/90号润滑油的含义。
Pancoast瘤标准的治疗方法是() ["手术","放疗","化疗","手术+术前放疗","手术+术后放疗"]
放置闭式引流后,进行性出血的指征是连续3小时,每小时引流血液超过() ["50ml","100ml","150ml","200ml","300ml"]
散堆装货物有哪些物理特性?