对放疗不敏感的肿瘤是() ["霍奇金瘤","精原细胞瘤","软骨肉瘤","乳腺癌","鼻咽癌"]
()是计算机接入网络的接口设备。 ["网卡","路由器","网桥","网关"]
什么是牵引电动机的半悬挂?有何优缺点?
良性骨肿瘤的X线表现为() ["边缘清楚","出现葱皮现象","骨膜反应明显","空腔形成","多处呈虫蛀状破坏"]
一男青年右大腿下端肿痛3个月。X线示右股骨下端骨肉瘤,下一步处理() ["立即行高位截肢","先作活检,根据病理报告决定处理","摄胸片","准备截肢,术时先作活检,快速切片决定是否截肢","大剂量局部放疗"]
车轮踏面为什么制成两段斜面?