“这包括使用液化石油气，但是也有其他方案，例如沼气、木炭和经过处理的煤饼”。

These include liquefied petroleum gas, but also alternatives like biogas, managed charcoal and processed briquettes.

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自来水、暖气、冷气、热水、煤气、石油液化气、天然气、沼气、居民用煤炭制品；

ii. Tap water, heating, air conditioning, hot water, coal gas, lipuefied petroleum gas, naturalgas, methane gas, coal/charcoal products for household use;

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