單項選擇題依據(jù)GB/T14684-2011,試樣經(jīng)干燥篩分后測得其4.75mm~2.36mm級壓碎值為18%,2.36mm~1.18mm的壓碎值為12%,1.18mm~600um的壓碎值為10%,600um~300um的壓碎值為8%,整體的壓碎值為()

A.18%
B.12%
C.10%
D.8%


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2.單項選擇題依據(jù)GB/T14684-2011,單次含水率與級配試驗試樣量分別為多少()

A.550g和500g
B.500g和550g
C.550g和550g
D.500g和500g