钢水吹氩后等待时间长时,钢包上部和下部的钢水温度()。A.比中部高 B.比中部低 C 发布时间:2020-01-03 19:20 │ 来源:www.tikuol.com 题型:单项选择题 问题: 钢水吹氩后等待时间长时,钢包上部和下部的钢水温度()。A.比中部高B.比中部低C.与中部一样
题型:单项选择题 _______you ______ a good time on your last vacation?[ ]A. Did; have B. Did; hadC. Were; have D. were; had 查看答案