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1. |
The temperature at which raw rubber is heated for the vulcanisation process is ____________ |
A. | 0-10 <sup>0</sup>C |
B. | 10-50 <sup>0</sup>C |
C. | 50-100 <sup>0</sup>C |
D. | 100-140 <sup>0</sup>C |
Answer» E. | |