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| Q. |
Other non-conventional processes lay behind Laser beam machining in drilling process because of which factors below? |
| A. | high cost |
| B. | long lead times |
| C. | low machining speeds |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| Explanation: other non-conventional processes need high costs for tools, long lead times, and low machining speeds when compared to lbm. | |
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