MCQOPTIONS
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| 1. |
The upper part of a chisel (head) is chamfered to an angle of ______. |
| A. | 10° to 12° |
| B. | 28° to 32° |
| C. | 18° to 22° |
| D. | 38° to 42° |
| Answer» B. 28° to 32° | |