若提取药材中的原生苷,除了采用沸水提取外,还可以选用A.热乙醇 B.乙醚 C.酸水 发布时间:2018-07-12 19:10 │ 来源:www.tikuol.com 题型:单项选择题 问题: 若提取药材中的原生苷,除了采用沸水提取外,还可以选用A.热乙醇B.乙醚C.酸水D.氯仿E.冷水
题型:单项选择题 选择方框中的句子完成对话。Frank:Which do you prefer, swimming or skating?Sam: 1 Frank:Me, too. Do you skate much?Sam: 2 Frank:What's your favorite sport?Sam:Football. What about you?Frank: 3 Sam:Who is your favorite player?Frank:Yao Ming. 4 Sam:Ronaldo. Frank: 5 Don't miss it!Sam:Oh, I won't. A. Yes, quite a lot. B. And yours? C. There is going to be a football game on CCTV5 this evening. D. I prefer skating. E. I like basketball best. 查看答案
题型:单项选择题 宫颈癌的腔内治疗,下列叙述哪项是正确的()A.传统腔内治疗均属于高剂量率照射 B.可通过腔内照射来提高B点剂量 C.腔内照射的等剂量曲线为正梨形 D.腔内照射的等剂量曲线为倒梨形 E.腔内照射由于剂量衰减很快,对直肠、膀胱的影响很小 查看答案
题型:单项选择题 某场馆地面工程,分基底垫层、基层、面层和抛光四个工艺过程,按四个分区流水施工,受区域划分和专业人员配置的限制,各工艺过程在四个区域依次施工天数分别为: 5,8,6,10;7,12,9,16;3,5,3,4;4,5,4,6。则其流水工期应为( )。A.29天B.43天C.44天D.62天 查看答案