当骨巨细胞瘤病理表现为肿瘤组织质地疏松、出血、坏死和囊性变时其对应的声像图表现: ["病变部位呈偏心性肿大","肿瘤与正常骨质界限清楚","肿瘤透声性良好,后部边界回声增强","彩色多普勒血流显像见少许点状血流或较丰富的血流"]
利用超声检测技术最早在几周能显示胎心搏动( ["5~6周","6~7周","7~8周","8~9周","10~12周"]
以下哪一个不是主要影响胰腺的疾病 ["胰腺炎","胰腺假性囊肿","胰腺癌","库欣综合征"]
论述扑救粮食加工厂火灾应注意哪些问题?
肾窦回声由下列哪些结构产生 ["肾周脂肪囊","肾盂、肾盏、肾血管、脂肪组织","肾实质","以上各项均是"]
论述粮食仓库火灾有哪些特点?