在提取的胡萝卜素粗品鉴定中,点样斑点用吹风机吹干时,温度不宜过高,否则斑点会变成 发布时间:2017-05-19 20:20 │ 来源:www.tikuol.com 题型:选择题 问题: 在提取的胡萝卜素粗品鉴定中,点样斑点用吹风机吹干时,温度不宜过高,否则斑点会变成[ ]A.白色B.黄色C.红色D.乳白色
题型:选择题 根据句意及单词的首字母完成句子。1. Are you afraid when you see anything s at night?2. You can e four seasons(季节) in a day there.3. My dog f me to school every day.4. Yesterday was my birthday. My parents b a book for me.5. I can't i what our life will be like in the future. 查看答案