A.水解反應(yīng) B.化學(xué)反應(yīng) C.氧化還原反應(yīng) D.光解反應(yīng)
A.氧、硫、氮 B.水、碳、氮 C.水、硫、磷 D.氧、碳、鐵
A.20%-30% B.40%-50% C.60%-70% D.80%-90%