乙二醇脱水塔塔顶冷凝器换热效果差会引起()。A、塔的液位波动 B、脱水塔真空度波动 发布时间:2017-05-05 21:54 │ 来源:www.tikuol.com 题型:单项选择题 问题: 乙二醇脱水塔塔顶冷凝器换热效果差会引起()。A、塔的液位波动B、脱水塔真空度波动C、蒸汽凝液罐液位波动D、回流量的波动
题型:单项选择题 — There is a story here in the paper about a 110-year-old man. — My goodness!I can't imagine____that old. [ ]A. to be B. to have been C. being D. having been 查看答案