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本课程起止时间为:2020-10-19到2021-01-25
Charper1 Course Introduction Laboratory Safety Test
1、 问题:Which of the following operations exists insecurity?
选项：
A:Experiments using volatile reagents and toxic gases should be conducted in a fume hood.
B:When opening a volatile reagent bottle, do not face the face or other people, it should be carried out in a fume hood.
C:When diluting concentrated sulfuric acid, the water should be slowly poured into concentrated sulfuric acid and continuously stirred.
D: When diluting concentrated sulfuric acid, the concentrated sulfuric acid should be poured slowly into the water and continuously stirred.
答案: 【When diluting concentrated sulfuric acid, the water should be slowly poured into concentrated sulfuric acid and continuously stirred. 点我阅读全文