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
