A、400 B、500 C、600 D、800
干砂500g,其篩分結(jié)果如下:篩孔尺寸(mm)5.02.51.250.630.3150.16< 0.16篩余量(g)22.552.5102.5122.5102.572.525.0根據(jù)以上情況,請(qǐng)回答下列問(wèn)題:
A.粗砂B.中砂C.細(xì)砂D.特細(xì)砂