5、 后山员工宿舍背后周围处设立禁止倒垃圾标牌，并清理现场垃圾，保持干净整洁。

• Keep it short and easy to remember.
• Use keywords related to your blog's topic.
• Avoid using hyphens or numbers.
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　　2、二次砌体质量差，灰缝不饱满；

• 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).

　　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。