问题：
[填空题] 钢结构的连接方法有 ___ 、 ___ 、 ___ 和 ___ 等,目前应用最多的是 ___ 和 ___ 。
参考答案：
焊接@#@铆接@#@普通螺栓连接@#@高强螺栓连接@#@焊接@#@高强螺栓连接,
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