4、塔吊修理时，必须让修理人员佩戴安全带，以防发生意外。

• 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).

　　主持人：徐璐璐

• 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).

　　各类真实的数据最有说服力，既可以单独成段、集中说明，也可穿插到各部分内容中分别介绍。比如资产规模、总收入、利润、市场覆盖率、市场占有率、专利数量、科研投入占比、行业排名等等。