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NCIDQ - IDPX Q Practice Test (Questions + Answers) LATEST UPDATE
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NCIDQ - IDPX Q Practice Test (Questions + Answers) LATEST UPDATE All of the following are true about gypsum wallboard EXCEPT? 1. Synthetic gypsum is chemically identical to natural mined gypsum 2. The main source of synthetic gypsum in North America is flue-gas desulfurization 3. Its manu...
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