转炉加石英的作用与意义:()A、造渣调节渣型 B、调节炉温 C、提高Cu直收率 D、 发布时间:2019-10-03 07:20 │ 来源:www.tikuol.com 题型:单项选择题 问题: 转炉加石英的作用与意义:()A、造渣调节渣型B、调节炉温C、提高Cu直收率D、造铜
题型:单项选择题 — How do you know so much about what’s going on in the countryside?— I’ve got a friend there who keeps me ________. A.informingB.to be informedC.informedD.being informed 查看答案