A.1:0.6:0.8 B.1:0.5:0.8 C.1:0.2:0.4 D.1:0.6:0.3
A.吸水率 B.含水率 C.填充率 D.軟化系數(shù)
A.≥6.5h B.≤6.5h C.≥10h D.≤10h