施工现场可燃材料堆场及其加工场、固定动火作业场与在建工程的防火间距不应小于10m。
参考答案：对
根据句意、汉语或首字母提示，补全单词，完成句子
1. Friends often s_____ hands when meeting each other.
2. Jack was s_____ to arrive at 7:00, but he arrived at 9:00.
3. In Japan people like to b_____ to each other when meeting for the first time.
4. How do you _____ (打招呼) other people in your country?
5. In _____ (瑞士) it is very important to be punctual.
链状效应
