【单选题】【消耗次数:1】
孔隙率增大,材料的()降低。
密度
表观密度
憎水性
抗冻性
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【单选题】 孔隙率增大,材料的()降低。  
①  密度    
②  表观密度    
③  憎水性    
④  抗冻性
【单选题】 孔隙率增大,材料的( )降低。
①  密度
②  表观密度
③  憎水性
④  抗冻性
【单选题】 孔隙率增大,材料的( )降低。
①  密度
②  表观密度
③  憎水性
④  渗透性
【单选题】 孔隙率增大,材料的( )降低。
①  密度????
②  表观密度???
③  憎水性????
④  渗透性
【单选题】 材料的孔隙率增大,材料的()低。  
①  强度、憎水性、吸水性  B密度、强度、抗冻性  C.吸湿性、抗渗性
②  料的孔隙率增大,材料的()低。  A.强度、憎水性、吸水性  B密度、强度、抗冻性  
③  吸湿性、抗渗性、耐水性  
④  表观密度、强度、密实度
【判断题】 材料的开放型的孔隙率越大,材料的抗冻性必然越差。
①  正确
②  错误
【判断题】 材料的抗渗性与材料内部的孔隙率特别是开口孔隙率有关,开口孔隙率越大,大孔含量越多,则抗渗性越好。
①  正确
②  错误
【判断题】 过火石灰具有多孔结构,内部孔隙率大,表观密度小,与水作用速度快。
①  正确
②  错误
【判断题】 材料的抗渗性与材料的开口孔隙率关系不大。
①  正确
②  错误
【单选题】 材料的孔隙率增大时,其性质保持不变的是( )。
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