外圆磨床工作精度检验,顶尖间磨外圆试件,可使用中心架支撑,圆柱度公差0.003mm。( )
参考答案:错
I must be off now, but I hope we can _____ each other _____ letter. [ ]
A. communicate to; by
B. communicate with; by
C. communicate to; in
D. communicate with; in
下列可确诊支气管异物的是()
A.X线片检查
B.CT扫描检查
C.支气管镜检查
D.病检
E.磁共振检查