

MCQOPTIONS
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1. |
Which of the following is correct about the hardness of angle plates? |
A. | Minimum hardness of 100 HB |
B. | Minimum hardness of 180 HB |
C. | Maximum hardness of 180 HB |
D. | Maximum hardness of 100 HB |
Answer» C. Maximum hardness of 180 HB | |