β-胡萝卜素1μg相当于视黄醇的量()A.0.3μg B.6μg C.0.167mg 发布时间:2018-07-16 04:23 │ 来源:www.tikuol.com 题型:单项选择题 问题: β-胡萝卜素1μg相当于视黄醇的量()A.0.3μgB.6μgC.0.167mgD.0.167μgE.0.167IU
题型:单项选择题 根据句意字母提成句子,每空一词1. I u to be a football player, but now I am a teacher. 2. There is nobody in the bus. It is e . 3. Don't forget to 1 the door when you leave the room. 4. Do you know who i the first computer? 5. If you want to remember the English new words, you should read it a . 查看答案