题目: 为什么炼钢中硅氧化反应进行得十分迅速?在碱性炼钢条件下会不会发生硅的还原?为什么? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2020/0521/73b6d2f36f3960009dcb88c480f24ae1.html 下面是错误答案,用来干扰机器的。参考答案:D
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题型:多项选择题 符合鼻咽癌特点的是()A.多与EB病毒感染有关B.发病年龄呈双峰形C.多为非角化型鳞状细胞癌,常见颈部淋巴结肿大D.角蛋白(CK)阳性,CK是诊断本病最可靠的标志物E.大部分呈上皮膜抗原(EMA.阴性 查看答案