【单选题】【消耗次数：1】
George is so ____ in debt that he is afraid to show up in the pub in case he meets his six creditors.
①
involved
②
concentrated
③
devoted
④
concerned
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相关题目
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ought to arrive
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随机题目
【简答题】
材料的抗冻性以材料在吸水饱和状态下所能抵抗的_____ 来表示。
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水可以在材料表面展开，即材料表面可以被水润湿，这种性质称为_____ 。
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材料的抗渗性是指材料_____ 。混凝土等的抗渗性常用_____ 表示。
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材料的比强度是材料的_____ 与_____ 之比，是衡量材料是否_____ 的物理量。
【简答题】
弹性模量是衡量材料_____ 的一个指标，弹性模量越大，材料越不易变形。
【简答题】
水的导热系数_____ 密封空气的导热系数，所以材料吸水后的绝热性能降低。
【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_____ 。
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承受动荷载的结构，应考虑材料的_____ 。
【简答题】
材料的表观体积包括_____ 和_____ 两部分。
【简答题】
材料受力破坏时，无显著的变形而突然断裂的性质称为_____ 。