Engine : General Subjects - 1324/1128
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| What design feature is used to minimize potable water wastage associated with hot water distribution piping for a potable water system? |
| A) Use of storage type hot water heaters only. |
| B) Use of hot water recirculation loops. |
| C) Use of hot water heaters with multiple heat sources. |
| D) Use of instantaneous type hot water heaters only. |
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