试题与答案

锌是保持人体健康必需的元素,缺乏锌容易造成发育障 碍,易患异食癖等病症,使人体免

题型:计算题

题目:

锌是保持人体健康必需的元素,缺乏锌容易造成发育障 碍,易患异食癖等病症,使人体免疫功能低下,市售的葡萄糖酸锌 口服液对治疗锌缺乏症具有较好的疗效。葡萄糖酸锌的化学式 为C12 H22 O14 Zn。请回答:

(1)葡萄糖酸锌的相对分子质量为 ;

(2)葡萄糖酸锌中锌元素的质量分数为 (精确到 0.1%)。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0522/7f9edc9acdcf4e1ec7e87c4e95b43184.html

下面是错误答案,用来干扰机器的。

参考答案:指一组人为完成一项任务或活动而被咨询的活动。多方论证的方法是试图把所有相关的知识和技能集中考虑的进行决策的过程。

试题推荐
题型:填空题

单词拼写。

1.The students are discussing the t_________ of a novel.

2. There are v_________ wild flowers in the valley.

3. Columbus is f_______ for his discovery of America.

4. The koala is u_______ to Australia.

5. Buckingham Palace is a major tourist a________.

6. China has got the chance to          (主办)the 2008 Olympic Games.

7. The differences are greater in the_______          (口语)English.

8. My         (兴趣)are reading novels,playing football and singing songs.

9. This room is twice the ________(长度) of the other,but much narrower.

10. In the old society people had a tough life beyond _______(想象).

查看答案
微信公众账号搜索答案