MCQOPTIONS
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| 1. |
What is the value of depth in Ultrasonic sinking, after which, material removal becomes difficult? |
| A. | 1 to 2 mm |
| B. | 2 to 5 mm |
| C. | 5 to 7 mm |
| D. | 7 to 10 mm |
| Answer» D. 7 to 10 mm | |