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87) Khái niệm nào dùng để chỉ tính quy định vốn có của các sự vật, hiện tương về mặt số lượng các yếu tố cấu thành, quy mô tồn tại của sự vật và tốc độ, nhịp điệu của sự vận động, phát triển của sự vật?a) Chấtb) Lượngc) Độd) Điểm nút

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