MCQOPTIONS
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MCQOPTIONS
| 1. |
Which of the following is true for quartz flats? |
| A. | Have 200 to 400 % more wearing quality than optical flats |
| B. | Have 10 % more wearing quality than optical flats |
| C. | Have 10 % less wearing quality than optical flats |
| D. | Have 200 to 400 % less wearing quality than optical flats |
| Answer» B. Have 10 % more wearing quality than optical flats | |