强板)上线:168mm中线:172mm下线:225mm上线与中线、下线距离之比为:h/H=0.35,试算炉柱弯曲度.
A、0.15
C、0.25
D、0.3
床身刮研时,刮平导轨Ao以A1导轨为基准测量两导轨的扭曲度,在专用桥板上放水平仪,要求(),直线只许中凸,要求直线度0.005mm/1000mm,0.01mm/全长。
A.0.002mm/1000mm,0.01mm/全长
B.0.003mm/1000mm,0.015mm/全长
C.0.005mm/1000mm,0.01mm/全长
D.0.004mm/1000mm,0.02mm/全长