【单选题】【消耗次数：1】
钢结构在搭接连接中，搭接的长度不得小于焊件较小厚度的（）。
①
7倍，并不得小于35mm
②
4倍，并不得小于20mm
③
6倍，并不得小于30mm
④
5倍，并不得小于25mm
参考答案：
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吊索钢丝绳端部采用编结固接时，编结部分的长度不得小于钢丝绳直径的（），并不应小于（）。
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