【简答题】Education is the process of learning and knowing, which is not restricted to our school text-books. It is a holistic process and continues through our life. Even the regular happening and s aroun...
【简答题】总纵弯曲正应力公式σ=(M/I)*Z中,M指的是()。 A. 计算断面上的弯矩 B. 横断面绕中和轴的惯性矩 C. 计算应力点到中和轴的距离 D. 许用应力 标准答案:A A. 载荷曲线为重量曲线与浮力曲线之和。 B. 载荷曲线为重量曲线与浮力曲线之差。 C. 载荷曲线可能出现在坐标纵轴的上方或者下方。 D. 载荷曲线和轴线之间所包含的面积之和为零。
【单选题】听力原文: Vocational education is the education for a particular occupation. Industrialized countries have seen a fall in demand for unskilled workers and an increase in jobs in the professional, technica...