Tài nguyên được gắn thẻ với: Water Heating
1 đề mục được tìm thấy (Hiển thị 1 - 1)
-
01-01-1986 Hot water is not always necessary, and in warm climates it may be relatively easy to do without. It is, however, more effective than cold water for many purposes. Even so, in some areas hot water is not used because fuel is so expensive it is used only for essential tasks. A solar heater can...
- Điều này cũng có sẵn trong:
- Português (pt)
- English (en)
- Español (es)
- Deutsche (de)
- Français (fr)
- Italian (it)