相关考题
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单项选择题
施工升降机标准节拼装时,相邻标准节的立柱结合面对接应平直,相互错位形成的阶差应限制在:①吊笼导轨不大于(),②对重导轨不大于()。
A.0.5mm,0.8mm
B.0.6mm,0.2mm
C.0.8mm,0.5mm
D.0.2mm,0.6mm

A.0.5mm,0.8mm
B.0.6mm,0.2mm
C.0.8mm,0.5mm
D.0.2mm,0.6mm