轴心受压构件的稳定承载力与哪些因素有关?
参考答案：
构件的几何形状与尺寸；杆端约束程度；钢材的强度；焊接残余应力；初弯曲；初偏心
莨菪碱和东莨菪碱
A．离子交换色谱B．聚酰胺色谱C．葡聚糖凝胶GD．大孔吸附树脂E．硅胶或氧化铝吸附色谱选择合适的色谱条件分离下列各组化合物
句型转换。
1. We are going to skip. (同义句)
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2. I drive a car to school every day. (同义句)
3. They will play sports after school. (一般疑问句，并肯定回答)
4. I will pick some flowers in the garden. (否定句)
