【判断题】【消耗次数：1】
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
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相关题目
【简答题】
材料的孔隙率恒定时，孔隙尺寸越小，则材料的强度越_____ ，抗渗性越_____ ，耐久性越_____ ，保温性越_____ 。
【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
随机题目
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The company has a primary task to ( )its brand name and improve its brand names attractiveness.
①
international
②
internationalization
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internationalize
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filed
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investigate
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①
economic
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①
employee
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dwell on
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①
devote to
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