【单选题】钢按冶炼方法可分为转炉钢、平炉钢和()。
【判断题】钢通常按冶炼方法分为转炉钢、平炉钢和电炉钢。
【判断题】论文结论部分集中反映作者的研究成果,表达对研究课题总的观点和主张。
【简答题】根据所听到的内容作答_____. A)He is late for classes too often. B)He has missed too many classes. C)He has failed in the exam.again. D)He is a trouble maker at school.
【简答题】Potassium chloride is often used as a salt bridge because K + and Cl - ions have in aqueous environment.
【单选题】Mr. Brown often (wore) a heavy coat because he was not (used to) (live) in such a (cold climate).
【判断题】钢按照冶炼方法可分为平炉钢、转炉钢和电炉钢。