属于二氧化碳灭火系统类型的是（）。
A.局部应用灭火系统
B.全淹没灭火系统
C.固定式灭火系统
D.移动式灭火系统
参考答案：A, B, D
单词拼写。
1. It's so near. I can even(甚至)hear his _____ (呼吸).
2. The teacher asks us to _____(背诵)this text.
3. Jimmy Li's songs are also _____(受欢迎)with the young people.
4. The old man is reading a _____(诗)at the party.
5. The cat is running to the tree _____(悄悄地).
情报学核心研究内容
