Single choice question (please choose the only correct one from the three alternative answers and black it in the answer sheet)
1. Wear (b) gloves when handling corrosive products
A. canvas B. rubber C. cotton cloth
Single choice question (please choose the only correct one from the three alternative answers and black it in the answer sheet)
1. Wear (b) gloves when handling corrosive products
A. canvas B. rubber C. cotton cloth
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