边沟作为路基排水构造物应设置在()路段 ["填方","高填方","挖方","低填方"]
男性,55岁,冠心病,发生急性剧烈胸骨后疼痛,血CPK明显升高,颈静脉充盈,肝大,血压下降至80/40mmHg,应诊断为() ["冠心病心力衰竭型","急性右心梗死","冠心病合并急性心包填塞","急性前壁心肌梗死伴泵衰竭","急性心肌梗死并室间隔破裂"]
周围型肺癌的CT表现是() ["肺叶内基底段肿块,上下径较长,增强CT显示主动脉分支供血","肺叶内孤立性肿块,类圆形,边缘光滑,CT增强明显强化","肺叶内孤立性肿块,分叶短小,毛刺,有空泡征","肺叶内孤立性结节,浅分叶,内有"爆米花样"钙化","肺叶内单发结节,有钙化,周边有"卫星"病灶"]
中央分隔带(中间带)常用于(),主要用以分隔对向行驶的车辆 ["高速公路","一级公路","二级公路","三、四级公路"]
男,45岁,胃大部切除术后5天,突然发生右上腹剧痛,伴发热,体温38.5℃。查体:上腹部压痛、反跳痛、肌紧张。腹腔穿刺抽出黄色液体,最可能的诊断为() ["十二指肠残端破裂","膈下脓肿","吻合口梗阻","输入段梗阻","倾倒综合征"]
纯弯曲