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1. |
What is the cross section of a standard specimen for impact testing? |
A. | 10mm√ó10mm |
B. | 10mm√ó20mm |
C. | 20mm√ó20mm |
D. | 15mm√ó20mm |
Answer» B. 10mm‚Äö√†√∂‚àö‚â•20mm | |