单项选择题
A.≤0.05mmB.〉0.05mmC.≤0.1mmD.〉0.1mm
A."辊径800mm辊宽900mm"B."辊径900mm辊宽800mm"C."辊周长800mm辊宽900mm"D."辊周长900mm辊宽800mm"
A.5MpaB.10MpaC.15MpaD.20Mpa
A.故障B.漏气C.无气D.气压高
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