蒸发按采用的压力分类错误的是()。A.高压蒸发 B.常压蒸发 C.加压蒸发 D.减压 发布时间:2017-06-02 05:28 │ 来源:www.tikuol.com 题型:单项选择题 问题: 蒸发按采用的压力分类错误的是()。A.高压蒸发B.常压蒸发C.加压蒸发D.减压蒸发
题型:单项选择题 You can ask him again if you like, but it won't make any ______-he'll still say no.[ ]A. mistake B. decisionC. contribution D. difference 查看答案
题型:单项选择题 To our joy, the operation is___ success and the patient is now out of ___ danger.A./;/B.a; theC./; theD.a; / 查看答案
题型:单项选择题 一定量的质量分数为14%的氢氧化钾溶液,若将其蒸发掉100 g水后,其质量分数为28%,体积为125 mL,则浓缩后的KOH的物质的量浓度为[ ]A.2.2 mol/L B.4 mol/L C.5 mol/L D.6.25 mol/L 查看答案