本条第二款第三项、第四项所称货物，是指构成不动产实体的材料和设备，包括建筑装饰材料和给排水、采暖、卫生、通风、照明、通讯、燃气、消防、中央空调、电梯、电气、光伏发电、智能化楼宇设备及配套设施等。
What follows is a proof of concept: it's not a finished standard, not a production-ready library, not even necessarily a concrete proposal for something new, but a starting point for discussion that demonstrates the problems with Web streams aren't inherent to streaming itself; they're consequences of specific design choices that could be made differently. Whether this exact API is the right answer is less important than whether it sparks a productive conversation about what we actually need from a streaming primitive.
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在工程写作里，Mermaid 更像是一种“可维护的图”。这里的玩法是：用 Ling Studio（更推荐 Ring-2.5-1T）或 Tbox（Ling）生成 Mermaid 代码块，然后把它作为图表源码嵌进 Tbox 的文档里；如果你的 Tbox 编辑器不支持直接渲染 Mermaid，就把 Mermaid 代码粘到在线渲染器里导出图片/截图，再回填到文档中。
If you are suffering distress or despair and need support, you could speak to a health professional, or an organisation that offers support. Details of help available in many countries can be found at Befrienders Worldwide. In the UK, a list of organisations that can help is available at bbc.co.uk/actionline. Readers in the US and Canada can call the 988 suicide helpline or visit its website.