MCQOPTIONS
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MCQOPTIONS
| 1. |
Which composite is used in electrical contact materials? |
| A. | Ag-CdO |
| B. | Pt-ThO<sub>2</sub> |
| C. | Pb-PbO |
| D. | Be-BeO |
| Answer» B. Pt-ThO<sub>2</sub> | |