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第一章 单元测试

1、 问题:狭义上的幼儿舞蹈是指幼儿所产生的各种有节奏的肢体动作。（ ）
选项：
A:对
B:错
答案: 【
错
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本答案对应课程为:点我自动跳转查看
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

第一章 单元测试

1、 问题:MySQL服务的文件文件夹有bin、docs、include、lib、share等。其中存放库文件的是（ ）文件夹。
选项：
A:bin
B:docs
C:include
D:lib
答案: 【
lib
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第一章 单元测试

1、 问题:298K时下列物质的标准摩尔生成焓不为零的是（ ）。
选项：
A:Fe(l)
B:P₄(白磷，s)
C:Ne(g)
D:Cl₂(g)
答案: 【
Fe(l)
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