[" March 31号练题，回复得**6分(显出后不评分)
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Это пост последнее редактирование由 1 2cy 于 217--4 111:47 判断题 沥青在使用过程中，随着使用时间的延长，沥青的粘性增大，塑性减小。 正确 注意：隐藏的显出后不评分，谢谢！
石油沥青在使用过程中，随着使用时间的延长，沥青的粘增大，塑减小 对的
随著实用时间的延长，沥青中的轻组分分解挥发，塑性会下降一些；组分变重粘度也会上升
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