耐火材料具有高机械强度,以抵抗机械磨损和冲击破坏。
参考答案:对
男,65岁。冠状病史10余年,冠脉造影检查后,出现恶心、纳差,BUN22mmol/L,Cr230mmol/L,HGB11.8g/dl,尿量500mL,BP140/80mmHg,最可能的诊断是()。
A.慢性肾衰
B.急性肾衰
C.缺血性肾病
D.过敏性间质性肾炎
E.良性肾小动脉硬化
Questions 14-18
The advantage of such a new product is that it is ______ and can be used in almost any type of vehicles.