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18. What is assigned a rating of 3 in the yellow diamond of the NFPA 704 symbol. OA. Helium OB. Sodium OC. Ammonium nitrate OD. Chlorine dioxide
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18. What is assigned a rating of 3 in the yellow diamond of the NFPA 704 symbol.

OA. Helium
OB. Sodium
OC. Ammonium nitrate
OD. Chlorine dioxide

User Adrean
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OD. Chlorine dioxide
User Escalator
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