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【多选题】
以下说法中不正确的是( ).A.
材料的表观密度大于其堆积密度
B.
材料的密实度与空隙率之和等于1
C.
材料与在水中吸收水分的能力是吸湿性，评价指标为含水率
D.
吸湿性是指材料在潮湿空气中吸收水分的能力
E.
轻质材料的吸水率一般要用质量吸水率表示
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