根据二号宿舍楼和办公楼的建筑面积，钢筋工不少于50人，一号宿舍楼钢筋工不少于20人。

• Keep it short and easy to remember.
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• Avoid using hyphens or numbers.
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　　三、蔡先生发表自己的观点

• Keep it short and easy to remember.
• Use keywords related to your blog's topic.
• Avoid using hyphens or numbers.
• Make sure it's available (you can use a domain registrar's search tool to check).

• Keep it short and easy to remember.
• Use keywords related to your blog's topic.
• Avoid using hyphens or numbers.
• Make sure it's available (you can use a domain registrar's search tool to check).

　　安全方面：存在进入施工现场的工人未带安全冒现象。原因分析：①天气炎热：②现场管理人员松懈。