（）为表示废物燃烧时所放出的热量，用以计算焚烧炉的能量平衡及估算辅助燃料所需量。
A.热灼减量
B.热值
C.高位热值
D.低位热值
参考答案：B
用所给词的适当形式填空
1. We _____(listen) to the radio yesterday morning.
2. I am tired.I can fall _____(sleep) quickly.
3. In spring, the weather _____(get) warmer.
4. Mike _____(not play) football with me this afternoon,because he was very busy.
5. Everything begins _____(grow) in spring.
6. Jenny _____(not do) her homework the day before yesterday.
7. What _____(be) the date yesterday?
8. -How _____(be) Tony's weekend?
-It _____(be not) bad.
9. Yesterday morning, he _____(hurry) out of the house with his father.
10. Please write _____(they) down.
当输入出现错误时，按（）键可删除插入点后面的文字。
A.Delete
B.Backspace
C.Enter
D.Ctrl+Enter
