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				| 1. | WHICH_OF_THE_FOLLOWING_MATERIALS_COMBINE_TO_FORM_THE_MAGNETIC_ABRASIVE_BRUSH_IN_MAF??$ | 
| A. | Work piece | 
| B. | Magnetic and abrasive particles | 
| C. | Magnets | 
| D. | All of the mentioned | 
| Answer» E. | |