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				| 1. | What are the tolerance values achieved in Chemical milling, which depend on work piece material and depth of cut? | 
| A. | ± 10% | 
| B. | ± 20% | 
| C. | ± 30% | 
| D. | ± 40% | 
| Answer» B. ¬¨¬®¬¨¬± 20% | |