MCQOPTIONS
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| 1. |
For what purpose are Gas heating collectors used? |
| A. | To trap solar radiance |
| B. | To act as a medium to help in conversion of sunlight to electrical energy |
| C. | Employed as solar air heaters |
| D. | They act as alternate panels in case of failure |
| Answer» D. They act as alternate panels in case of failure | |