问题
问答题 简答题
燃烧的发热值是如何规定的?
答案
参考答案:发热值分高位发热值和低位发热值。高位发热值是指1kg燃料完全燃烧后所产生的热量,其中包括产生的水蒸汽所含的热量;低位发热值是指高位发热值除去水所含的热量,后者是锅炉设计和热力学计算热效率试验等的依据。
燃烧的发热值是如何规定的?
参考答案:发热值分高位发热值和低位发热值。高位发热值是指1kg燃料完全燃烧后所产生的热量,其中包括产生的水蒸汽所含的热量;低位发热值是指高位发热值除去水所含的热量,后者是锅炉设计和热力学计算热效率试验等的依据。
改正句中的一处错误。 | |
1. Where's Wuhan and Changsha? 2. Where're the flowers? It's on the table. 3. There is a picture book on dresser. 4. There's a window (窗户)on the wall. 5. We can see some birds on the tree. 6. I need my hat. Please take it here. 7. It's on the floor,between the bookcase or the desk. 8. We aren't know his name. 9. Some things are in the bed. 10. Here is the CDs. | _____ _____ _____ _____ _____ _____ _____ _____ _____ _____ |