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【判断题】
碳酸及碳酸盐的热稳定性次序是 NaHCO 3 >Na 2 CO 3 >H 2 CO 3A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】关于分栏命令说法正确的是( )
A.
分栏命令在“页面布局”选项卡中
B.
分栏命令在“插入”选项卡中
C.
分栏命令最多可以将文本分成三栏
D.
分栏命令不能设置栏宽度
【单选题】The pollution is getting increasingly serious, particularly in developing countries.
A.
partly
B.
properly
C.
specially
D.
especially
【简答题】Hundreds of years ago, life was 1 harder than it is today. 2 People didn't have any modern machines, and there was no modern medicine, With the development of social economy, the 3 conditions of manki...
【简答题】A. Soil pollution. B. Water pollution. C. Air pollution. D. Sound pollution. 2. A. It is more polluted. B. It has fewer cars. C. It has clean air. D. It has less industry. 3. A. Industry. B. Cars. C. ...
【单选题】关于分栏命令说法正确的是:
A.
分栏命令在“页面布局”选项卡中
B.
分栏命令在“插人”选项卡中
C.
分栏命令最多可以将文本分成三栏
D.
分栏命令不能设置栏宽度
E.
以上答案都不对
【多选题】下列关于导入命令和打开命令说法正确的是
A.
导入命令是在当前文件中打开选定文件
B.
导入命令是在新窗口中打开选定文件
C.
打开命令是在新窗口中打开选定文件
D.
打开命令是在当前文件中打开选定文件
【简答题】a. I intended to arrive earlier, but there were some (1) delay. b. The mistake can be (2) if you are more careful. c. (3) of er should not be regarded as lack of courage. d. Most pollution is ...
【简答题】找出下列句子中的谓语部分 1. The Earth Summit was held in Johannesburg in South Africa. 2. People burn wood and coal to cook food and stay warm. 3. Air pollution is also a big problem in very large cities, especia...
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