题目内容
(请给出正确答案)
[单选题]
桥式起重机轨距允许偏差是±2~±5mm,轨道纵向倾销度为本/1500,两根轨道相对标高偏差为()mm。
A.10
B.5
C.15
D.8
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A.10
B.5
C.15
D.8
A.+4mm,-2mm
B.±2mm
C.5mm
D.+6mm,-4mm
A.+4mm,-2mm
B.5mm
C.±2mm
D.+6mm,-4mm
A.+12mm,-8mm
B.+10mm,-7mm
C.+8mm,-6mm
D.+8mm,-4mm