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				| 1. | What is the value of specific energy used in Plasma beam machining process? | 
| A. | 100 W/(cm<sup>3</sup>-min) | 
| B. | 200 W/(cm<sup>3</sup>-min) | 
| C. | 300 W/(cm<sup>3</sup>-min) | 
| D. | 400 W/(cm<sup>3</sup>-min) | 
| Answer» B. 200 W/(cm<sup>3</sup>-min) | |