下列哪项检查对诊断血栓闭塞性脉管炎的帮助最小( )。
A.肢体抬高试验
B.皮肤测温检查
C.X线平片
D.多普勒超声检查
E.肢体血流图
参考答案:C
Students in that school are judged ________what they have achieved in their studies.[ ]
A. in spite of
B. in charge of
C. in favor of
D. in terms of
与球墨铸铁相比,可锻铸铁具有的优点是()。
A.成本低
B.质量稳定
C.扭转疲劳强度高
D.工艺处理简单