MCQOPTIONS
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MCQOPTIONS
| 1. |
Low temperature tempering occurs at __________ |
| A. | 50-150<sup>o</sup>C |
| B. | 150-250<sup>o</sup>C |
| C. | 350-450<sup>o</sup>C |
| D. | 500-650<sup>o</sup>C |
| Answer» C. 350-450<sup>o</sup>C | |