问题 选择题 读句子，想想句子描述的是谁，将序号填在括号里。( ) 1. My friend has a big nose, a big mouth and two small eyes. A. ( ) 2. My friend likes sports.B. ( ) 3. My friend has long hair, two big eyes and a small nose. C. ( ) 4. My friend has short hair. He likes painting. D. ( ) 5. My friend has long hair. She likes music. E. 答案 1-5 C D E A B
，腹板厚tw=7mm，钢材牌号为Q235-B，焊接采用E4303型焊条，普通螺栓采用 4.6级，高强螺栓采用10.9级，摩擦面处理采用钢丝刷清除浮锈，抗滑移系数为0.30，支撑节点采用多种连接形式。