凸轮轴颈的圆度及圆柱度的误差应不大于0.03mm,轴颈磨损量应不大于1mm。
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凸轮轴轴承油隙用()测量。
A. 厚薄规
B. 外径千分尺
C. 塑料间隙规
D. 游标卡尺
凸轮轴弯曲用()检查。
A. 磁性表座+百分表
B. 间隙规
C. 游标尺
D. 精密直尺
She will never forget the days ______ she spent in Beijing.
A. when
B. what
C. which
D. why
This is the subject ______ we have talked a lot.
A. to which
B. about which
C. that
D. which