上颌向近中颊侧倾斜的末端孤立健康磨牙常设计卡环的类型是()
A．圈型卡环
B．单臂卡环
C．回力卡环
D．双臂卡环
E．对半卡环
参考答案：A
An investor would most likely expect commodities to have correlations with traditional stock or bond investments and inflation, respectively, that are: Correlation with inflation Correlation with traditional stock or bond investments()
A. positive positive
B. positive negative
C. negative positive
位错线的滑移和攀移都可以使金属晶体在滑移面产生塑性变形。（）
