单项选择题
水泥抗折试验机加荷园柱和支撑园柱的直径(),两支撑园柱的中心距()
A.100mm,10mm
B.10mm,10mm
C.10mm,100mm
D.100mm,100mm
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单项选择题
A.100mm,10mm
B.10mm,10mm
C.10mm,100mm
D.100mm,100mm
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