竖炉设置导风墙和烘干床的作用有哪些?
参考答案:
主要作用是:改善了料栓透气性,炉内料层对气流的阻力减小,废气穿透能力增强,燃烧室压力降低,有利于提高球团矿的质量,降低能耗。
防水施工方案是防水安全施工的有效途径。( )
Which of the following characteristics is best described that the information in financial statements can influence user's economic decisions or affect user's evaluation of past events or forecasts of future events in accordance with the IFRS framework's definitions and recognition criteria()
A. Relevance.
B. Comparability.
C. Faithful representation.