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["[Diario diario] Conocimiento básico de procesos (Pregunta verdadera/falsa: Escriba '√' para lo verdadero y '×' para lo falso)"),"El color de los productos petroquulos se ses principalmente por la presencia de azufre. F

2020-05-18View Original

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石油产品的颜色主要是由沥青质引起的。 错误

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