在冶炼生铁品种稳定的条件下，直接还原消耗的碳量与直接还原度成反比关系。
参考答案：错
盐渍化土壤分为那5个级别？
A parent reports that his 2-year-old child often fails when running. The nurse interprets this as indicating which of the following as a normal aspect of a toddler’s vision
A. Near-sightedness.B. Far-sightedness.C. Binocular vision.D. Strabismus.
